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  1. Article ; Online: Delaying or promoting? Manipulation of leaf senescence to improve crop yield and quality.

    Zhou, Min / Yang, Jiading

    Planta

    2023  Volume 258, Issue 3, Page(s) 48

    Abstract: Main conclusion: Senescence influences leaf productivity through two aspects: photosynthesis and nutrient remobilization. Through distinctively manipulating progress of leaf senescence, it is promising to improve crop yield and quality simultaneously. ... ...

    Abstract Main conclusion: Senescence influences leaf productivity through two aspects: photosynthesis and nutrient remobilization. Through distinctively manipulating progress of leaf senescence, it is promising to improve crop yield and quality simultaneously. Crop yield and quality are two chief goals pursued in agricultural and horticultural production. The basis of crop yield is leaf photosynthesis. Senescence is the last stage of leaf development, which usually causes decreasing of leaf photosynthetic activity. Delaying leaf senescence through physiological or molecular strategies may result in higher photosynthetic activity with a longer duration, thus producing more photoassimilates for biomass accumulation. On the other side, leaf senescence always induces degradation of macromolecular nutrients (including chlorophylls and proteins), and nutritional elements in leaves are then resorbed for development of other organs. For those crops with non-leaf organs as harvested biomass, translocating nutritional elements from leaves to harvested biomass is an indispensable physiological process to increase crop yield and quality. This review summarized successful studies about effects of delaying or promoting senescence on crop yield or quality improvement. Considering the distinctiveness of various crops, manipulation of leaf senescence should be specialized during agricultural and horticultural practices. Rational regulation of leaf senescence, such as inhibiting senescence to maintain leaf photosynthesis and then promoting senescence (with appropriate onset and efficiency) to remobilize more nutrients from leaves to target organs, may ultimately improve both crop yield and quality.
    MeSH term(s) Plant Senescence ; Photosynthesis/physiology ; Crops, Agricultural ; Chlorophyll/metabolism ; Plant Leaves/metabolism
    Chemical Substances Chlorophyll (1406-65-1)
    Language English
    Publishing date 2023-07-21
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 208909-9
    ISSN 1432-2048 ; 0032-0935 ; 1866-2749
    ISSN (online) 1432-2048
    ISSN 0032-0935 ; 1866-2749
    DOI 10.1007/s00425-023-04204-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Identification of ApbHLH1 as a Partner Interacting with ApMYB1 to Promote Anthocyanin Biosynthesis during Autumnal Leaf Coloration in Acer palmatum

    Chen, Long / Sun, Sujing / Qiu, Gengcheng / Yang, Jiading

    Forests. 2023 June 19, v. 14, no. 6

    2023  

    Abstract: Anthocyanin biosynthesis determines the leaf color of Acer palmatum as a widely-planted landscape tree. Previously, ApMYB1 has been characterized as a positive regulator of anthocyanin biosynthesis. To further elucidate the mechanism of leaf coloration, ... ...

    Abstract Anthocyanin biosynthesis determines the leaf color of Acer palmatum as a widely-planted landscape tree. Previously, ApMYB1 has been characterized as a positive regulator of anthocyanin biosynthesis. To further elucidate the mechanism of leaf coloration, the present study identified a basic helix-loop-helix (bHLH) transcription factor (ApbHLH1) through the phylogenetic analysis of 156 putative bHLH proteins in Acer palmatum and eight reference bHLHs which were known to be involved in the anthocyanin biosynthesis of selected plants. Protein structure comparison showed that ApbHLH1 has a conserved bHLH domain, and its N-terminal contains an MYB-interacting region. The expression of ApbHLH1 in leaves was found to not be correlated with anthocyanin contents either in green, semi-red leaves or during leaf autumnal senescence when anthocyanin content increased. ApbHLH1 expression in detached leaves was induced by exogenous senescence-promoting chemicals, including H₂O₂, SA, MeJA, ACC and ABA, with certain durations. In particular, either high light or low temperature induced ApbHLH1 expression significantly, and combination of high light and low temperatures seemed more effective in inducing ApbHLH1 expression. Luciferase complementation imaging assays confirmed the physical interaction between ApbHLH1 and ApMYB1, which could be abolished by either the truncating MYB-interacting region of ApbHLH1 or the deleting bHLH interacting domain of ApMYB1. The transient expression of ApbHLH1 could not induce anthocyanin production, while the co-expression of ApbHLH1 and ApMYB1 resulted in a higher accumulation of anthocyanins compared to the expression of ApMYB1 alone in tobacco leaves. Collectively, our results revealed that ApbHLH1 participated in leaf coloration through binding with ApMYB1 and enhancing the ApMYB1 function of promoting anthocyanin biosynthesis during leaf autumnal reddening in Acer palmatum. ApbHLH1 could have the potential for breeding color-leafed plants through co-transformation with ApMYB1.
    Keywords Acer palmatum ; anthocyanins ; biosynthesis ; color ; leaves ; luciferase ; ornamental plants ; phylogeny ; protein structure ; temperature ; tobacco ; transcription factors
    Language English
    Dates of publication 2023-0619
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2527081-3
    ISSN 1999-4907
    ISSN 1999-4907
    DOI 10.3390/f14061262
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Analysis of Nitrogen Dynamics and Transcriptomic Activity Revealed a Pivotal Role of Some Amino Acid Transporters in Nitrogen Remobilization in Poplar Senescing Leaves.

    Zhou, Min / Zhang, Yuanlan / Yang, Jiading

    Plants (Basel, Switzerland)

    2023  Volume 12, Issue 24

    Abstract: Leaf senescence is an important developmental process for deciduous trees during which part of leaf nitrogen is remobilized to branches, thus being beneficial for nitrogen conservation. However, the associated regulatory mechanism remains largely unknown ...

    Abstract Leaf senescence is an important developmental process for deciduous trees during which part of leaf nitrogen is remobilized to branches, thus being beneficial for nitrogen conservation. However, the associated regulatory mechanism remains largely unknown in deciduous trees. In this study, nitrogen dynamics and transcriptomic activity in senescing leaves were measured during autumnal senescence in hybrid poplar. Both concentrations of leaf total nitrogen (N) and amine compounds were found to decline from the pre-senescence (PRE) to the middle-senescence (MS) stage. Although the total N concentration decreased further from MS to the late-senescence (LS) and leveled off to abscission (ABS) stage, amine compound concentration increased continuously from MS to ABS, suggesting that translocation of amine compounds underperformed production of amine compounds in leaves during this period. L-glutamate, L-glutamine and α-aminoadipic acid were the top three amine compounds accumulated in senescent leaves. RNA-Seq profiling identified thousands of differentially expressed genes (DEGs) with functional association with a metabolic transition towards disassimilation. Many genes encoding amino acid metabolism enzymes and amino acid transporters (AATs) were up-regulated. Comparison of expression trend with leaf N dynamics and phylogenetic analysis identified several
    Language English
    Publishing date 2023-12-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants12244140
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Network of Soil Fungi and the Microfauna Community under Diverse Anthropic Disturbances under

    Lin, Xiaoyue / Han, Xuemei / Yang, Jiading / Liu, Fengyu / Li, Yuying / Chen, Zhaojin

    Plants (Basel, Switzerland)

    2024  Volume 13, Issue 3

    Abstract: The reservoir coastal zone is the transitional zone between the terrestrial ecosystem and the aquatic ecosystem. Soil is an essential part of the terrestrial ecosystem and vital for life on Earth. To understand the composition and diversity of the soil ... ...

    Abstract The reservoir coastal zone is the transitional zone between the terrestrial ecosystem and the aquatic ecosystem. Soil is an essential part of the terrestrial ecosystem and vital for life on Earth. To understand the composition and diversity of the soil eukaryotic microbial community under the background of artificial planting of
    Language English
    Publishing date 2024-01-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants13030393
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D underlies lesion-mimic phenotype in dark-treated Arabidopsis pheide a oxygenase mutant leaves

    Yu, Yongfan / Zhang, Qiang / Sun, Sujing / Yang, Jiading

    Planta. 2022 June, v. 255, no. 6

    2022  

    Abstract: MAIN CONCLUSION: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D (RBOHD) encoding a plasma membrane NADPH oxidase is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE during ... ...

    Abstract MAIN CONCLUSION: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D (RBOHD) encoding a plasma membrane NADPH oxidase is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE during extended darkness. Chlorophyll degradation is an indispensable process in leaf senescence, either age-dependent or dark-induced. Besides higher chlorophyll retention, a lesion-mimic phenotype (abbreviated as LMP afterwards) was exhibited in Arabidopsis leaves with mutation of PHEIDE a OXYGENASE (PaO) involved in chlorophyll degradation during dark incubation, but the associated mechanism remains elusive. We found that dark-treated pao leaves showed higher membrane damage and H₂O₂ accumulation, while scavenging H₂O₂ by its chemical scavenger diminished LMP. RBOHD which encodes NADPH oxidase was strikingly up-regulated in pao leaves during dark treatment. Chemical inhibition of NADPH oxidase or mutation of RBOHD in pao leaves suppressed LMP. Thus, our study suggests that up-regulated RBOHD transcription is responsible for the formation of LMP in dark-treated pao leaves and there may be a retrograde signaling pathway mediating upregulation of RBOHD which remains to be elucidated.
    Keywords Arabidopsis ; NAD(P)H oxidase (H2O2-forming) ; chlorophyll ; leaves ; mutants ; mutation ; phenotype ; plasma membrane ; respiratory burst
    Language English
    Dates of publication 2022-06
    Size p. 110.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    ZDB-ID 208909-9
    ISSN 1432-2048 ; 0032-0935 ; 1866-2749
    ISSN (online) 1432-2048
    ISSN 0032-0935 ; 1866-2749
    DOI 10.1007/s00425-022-03895-2
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D underlies lesion-mimic phenotype in dark-treated Arabidopsis pheide a oxygenase mutant leaves.

    Yu, Yongfan / Zhang, Qiang / Sun, Sujing / Yang, Jiading

    Planta

    2022  Volume 255, Issue 6, Page(s) 110

    Abstract: Main conclusion: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D (RBOHD) encoding a plasma membrane NADPH oxidase is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE during ... ...

    Abstract Main conclusion: Upregulated expression of RESPIRATORY BURST OXIDASE HOMOLOG D (RBOHD) encoding a plasma membrane NADPH oxidase is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE during extended darkness. Chlorophyll degradation is an indispensable process in leaf senescence, either age-dependent or dark-induced. Besides higher chlorophyll retention, a lesion-mimic phenotype (abbreviated as LMP afterwards) was exhibited in Arabidopsis leaves with mutation of PHEIDE a OXYGENASE (PaO) involved in chlorophyll degradation during dark incubation, but the associated mechanism remains elusive. We found that dark-treated pao leaves showed higher membrane damage and H
    MeSH term(s) Arabidopsis/metabolism ; Arabidopsis Proteins/genetics ; Arabidopsis Proteins/metabolism ; Chlorophyll/metabolism ; Gene Expression Regulation, Plant ; Hydrogen Peroxide/metabolism ; NADPH Oxidases/genetics ; NADPH Oxidases/metabolism ; Oxygenases ; Phenotype ; Plant Leaves/metabolism
    Chemical Substances Arabidopsis Proteins ; Chlorophyll (1406-65-1) ; Hydrogen Peroxide (BBX060AN9V) ; Oxygenases (EC 1.13.-) ; pheide a oxygenase (EC 1.13.-) ; NADPH Oxidases (EC 1.6.3.-) ; superoxide-forming enzyme (EC 1.6.99.-)
    Language English
    Publishing date 2022-04-26
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 208909-9
    ISSN 1432-2048 ; 0032-0935 ; 1866-2749
    ISSN (online) 1432-2048
    ISSN 0032-0935 ; 1866-2749
    DOI 10.1007/s00425-022-03895-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Leaf Coloration in Acer palmatum Is Associated with a Positive Regulator ApMYB1 with Potential for Breeding Color-Leafed Plants

    Sun, Sujing / Zhang, Qiang / Yu, Yongfan / Feng, Jianyuan / Liu, Changlai / Yang, Jiading

    Plants. 2022 Mar. 12, v. 11, no. 6

    2022  

    Abstract: Anthocyanin biosynthesis and accumulation is closely associated with tissue/organ coloring in plants. To gain insight into the physiological and molecular mechanisms of leaf coloring in Acer palmatum, a deciduous tree during autumnal senescence, we first ...

    Abstract Anthocyanin biosynthesis and accumulation is closely associated with tissue/organ coloring in plants. To gain insight into the physiological and molecular mechanisms of leaf coloring in Acer palmatum, a deciduous tree during autumnal senescence, we first investigated concentration dynamics of pigments (i.e., chlorophyll, carotenoid and anthocyanin) in leaves with differential coloring. It was found that compared to green leaves (GN), anthocyanins were accumulated actively in semi-red (SR) and total-red (TR) leaves, accompanied with chlorophyll and carotenoid degradation. Then transcriptional profiling on GN and SR leaves identified thousands of transcripts with differential expression in SR compared to GN leaves. An annotation search showed that the entire flavonoid/anthocyanin biosynthesis pathway from the production of naringenin chalcone to modification of flavonoid backbone was extensively activated at the transcriptional level in SR leaves. Phylogenetic analysis of putative MYB proteins identified ApMYB1 as a putative regulator promoting anthocyanin biosynthesis. Expression of ApMYB1 in leaves was induced by exogenous hormones including abscisic acid. Stable overexpression of ApMYB1 in tobacco resulted in leaves with higher accumulation of anthocyanins. Collectively, our results identified ApMYB1 as a positive regulator associated with leaf coloring in Acer palmatum during autumnal senescence, which may be regarded a potential target for breeding color-leafed plants.
    Keywords Acer palmatum ; abscisic acid ; anthocyanins ; biosynthesis ; carotenoids ; chalcone ; chlorophyll ; color ; gene expression regulation ; leaves ; naringenin ; phylogeny ; tobacco ; transcription (genetics) ; trees
    Language English
    Dates of publication 2022-0312
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2704341-1
    ISSN 2223-7747
    ISSN 2223-7747
    DOI 10.3390/plants11060759
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: Physiological analysis reveals relatively higher salt tolerance in roots of Ilex integra than in those of Ilex purpurea

    Yu, Yongfan / Zhang, Min / Feng, Jianyuan / Sun, Sujing / Zhou, Peng / Yang, Jiading

    Journal of forestry research. 2022 Aug., v. 33, no. 4

    2022  

    Abstract: Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudflat areas with high salinity. Here, 2-year cutting seedlings of Ilex purpurea Hassk. ...

    Abstract Determining the responses of candidate plants to salt stress is a prerequisite for selecting and breeding suitable plants with high salt tolerance to grow in coastal mudflat areas with high salinity. Here, 2-year cutting seedlings of Ilex purpurea Hassk. (local species) and I. integra Thunb. (introduced species) were grown in pots in a glasshouse and irrigated with a Hoagland-NaCl solution at 0, 24, and 48 h. Root samples were collected at 0, 1, 6, 24, and 72 h, and concentration of Na⁺ ion; content of proline, soluble carbohydrate, malondialdehyde (MDA), H₂O₂ and ascorbate; and activity of three key antioxidative enzymes were measured. Roots of I. integra accumulated relatively less Na⁺ and had less membrane lipid peroxidation and H₂O₂ during salt stress, thus indicating a relatively higher salt tolerance than roots of I. purpurea. Values for ascorbate content and antioxidant enzymatic activity suggest that the antioxidant ascorbate and antioxidative catalase may play substantial roles for scavenging reactive oxygen species in I. integra roots during salt treatment. Thus, I. integra is apparently more suitable for growing in local highly saline coastal mudflats.
    Keywords Ilex integra ; carbohydrates ; catalase ; enzyme activity ; forestry ; greenhouses ; introduced species ; lipid peroxidation ; malondialdehyde ; proline ; research ; salinity ; salt stress ; salt tolerance
    Language English
    Dates of publication 2022-08
    Size p. 1187-1196.
    Publishing place Springer Nature Singapore
    Document type Article
    ZDB-ID 2299615-1
    ISSN 1993-0607 ; 1007-662X
    ISSN (online) 1993-0607
    ISSN 1007-662X
    DOI 10.1007/s11676-021-01386-w
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  9. Article ; Online: Senescence and nitrogen use efficiency in perennial grasses for forage and biofuel production.

    Yang, Jiading / Udvardi, Michael

    Journal of experimental botany

    2018  Volume 69, Issue 4, Page(s) 855–865

    Abstract: Organ senescence is an important developmental process in plants that enables recycling of nutrients, such as nitrogen, to maximize reproductive success. Nitrogen is the mineral nutrient required in greatest amount by plants, although soil-N limits plant ...

    Abstract Organ senescence is an important developmental process in plants that enables recycling of nutrients, such as nitrogen, to maximize reproductive success. Nitrogen is the mineral nutrient required in greatest amount by plants, although soil-N limits plant productivity in many natural and agricultural systems, especially systems that receive little or no fertilizer-N. Use of industrial N-fertilizers in agriculture increased crop yields several fold over the past century, although at substantial cost to fossil energy reserves and the environment. Therefore, it is important to optimize nitrogen use efficiency (NUE) in agricultural systems. Organ senescence contributes to NUE in plants and manipulation of senescence in plant breeding programs is a promising approach to improve NUE in agriculture. Much of what we know about plant senescence comes from research on annual plants, which provide most of the food for humans. Relatively little work has been done on senescence in perennial plants, especially perennial grasses, which provide much of the forage for grazing animals and promise to supply much of the biomass required by the future biofuel industry. Here, we review briefly what is known about senescence from studies of annual plants, before presenting current knowledge about senescence in perennial grasses and its relationship to yield, quality, and NUE. While higher yield is a common target, desired N-content diverges between forage and biofuel crops. We discuss how senescence programs might be altered to produce high-yielding, stress-tolerant perennial grasses with high-N (protein) for forage or low-N for biofuels in systems optimized for NUE.
    MeSH term(s) Aging ; Biofuels ; Crops, Agricultural/growth & development ; Crops, Agricultural/metabolism ; Nitrogen/metabolism ; Poaceae/growth & development ; Poaceae/metabolism
    Chemical Substances Biofuels ; Nitrogen (N762921K75)
    Language English
    Publishing date 2018-02-14
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 2976-2
    ISSN 1460-2431 ; 0022-0957
    ISSN (online) 1460-2431
    ISSN 0022-0957
    DOI 10.1093/jxb/erx241
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  10. Article: Senescence and nitrogen use efficiency in perennial grasses for forage and biofuel production

    Yang, Jiading / Udvardi, Michael

    Journal of experimental botany. 2018 Feb. 12, v. 69, no. 4

    2018  

    Abstract: Organ senescence is an important developmental process in plants that enables recycling of nutrients, such as nitrogen, to maximize reproductive success. Nitrogen is the mineral nutrient required in greatest amount by plants, although soil-N limits plant ...

    Abstract Organ senescence is an important developmental process in plants that enables recycling of nutrients, such as nitrogen, to maximize reproductive success. Nitrogen is the mineral nutrient required in greatest amount by plants, although soil-N limits plant productivity in many natural and agricultural systems, especially systems that receive little or no fertilizer-N. Use of industrial N-fertilizers in agriculture increased crop yields several fold over the past century, although at substantial cost to fossil energy reserves and the environment. Therefore, it is important to optimize nitrogen use efficiency (NUE) in agricultural systems. Organ senescence contributes to NUE in plants and manipulation of senescence in plant breeding programs is a promising approach to improve NUE in agriculture. Much of what we know about plant senescence comes from research on annual plants, which provide most of the food for humans. Relatively little work has been done on senescence in perennial plants, especially perennial grasses, which provide much of the forage for grazing animals and promise to supply much of the biomass required by the future biofuel industry. Here, we review briefly what is known about senescence from studies of annual plants, before presenting current knowledge about senescence in perennial grasses and its relationship to yield, quality, and NUE. While higher yield is a common target, desired N-content diverges between forage and biofuel crops. We discuss how senescence programs might be altered to produce high-yielding, stress-tolerant perennial grasses with high-N (protein) for forage or low-N for biofuels in systems optimized for NUE.
    Keywords annuals ; bioenergy industry ; biofuels ; biomass ; breeding programs ; crop yield ; energy crops ; forage ; fossil fuels ; fuel production ; grazing ; nitrogen ; nitrogen content ; nitrogen fertilizers ; nutrient use efficiency ; nutrients ; perennial grasses ; plant breeding ; reproductive success
    Language English
    Dates of publication 2018-0212
    Size p. 855-865.
    Publishing place Oxford University Press
    Document type Article
    ZDB-ID 2976-2
    ISSN 1460-2431 ; 0022-0957
    ISSN (online) 1460-2431
    ISSN 0022-0957
    DOI 10.1093/jxb/erx241
    Database NAL-Catalogue (AGRICOLA)

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