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  1. Article: Induction of heartwood formation in young Indian sandalwood (

    Liu, Xiaojin / Zhang, Qilei / Hong, Zhou / Xu, Daping

    Frontiers in plant science

    2022  Volume 13, Page(s) 961391

    Abstract: Induction of heartwood formation in 6-year-old Indian sandalwood ( ...

    Abstract Induction of heartwood formation in 6-year-old Indian sandalwood (
    Language English
    Publishing date 2022-07-28
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2613694-6
    ISSN 1664-462X
    ISSN 1664-462X
    DOI 10.3389/fpls.2022.961391
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Drought could promote the heartwood formation in Dalbergia odorifera by enhancing the transformation of starch to soluble sugars

    Cui, Zhiyi / Yang, Zengjiang / Xu, Daping / Li, Xiaofei

    Scandinavian journal of forest research. 2022 Jan. 02, v. 37, no. 1

    2022  

    Abstract: The heartwood of Dalbergia odorifera T. Chen (D. odorifera) is highly valuable. It was speculated that drought could promote heartwood formation in D. odorifera. To test this hypothesis, we artificially simulated conditions of low and high soil moisture ... ...

    Abstract The heartwood of Dalbergia odorifera T. Chen (D. odorifera) is highly valuable. It was speculated that drought could promote heartwood formation in D. odorifera. To test this hypothesis, we artificially simulated conditions of low and high soil moisture content and investigated whether D. odorifera trees living in habitats with contrasting soil water conditions display distinct heartwood formation. Besides, we performed a preliminary study to explore the possible mechanism of drought affecting heartwood formation in D. odorifera in terms of non-structural carbohydrates (NSC). Higher heartwood formation percentage and heartwood size were observed in drought-treated trees. The heartwood density of drought-treated trees was significantly greater than that of control and the oil content of heavy drought-treated heartwood was significantly higher than that of the other treatments. None of water treatments had a significant effect on the essential oil components of heartwood. Furthermore, the effects of water treatments on the total amount of NSC were very limited; however drought treatments enhanced the transformation of starch to soluble sugars compared to control. This study confirmed the hypothesis that drought could promote the heartwood formation in D. odorifera, not by changing the total amount of NSC but by changing the component proportion of NSC.
    Keywords Dalbergia odorifera ; drought ; essential oils ; forests ; heartwood ; lipid content ; research ; soil water ; soil water content ; starch
    Language English
    Dates of publication 2022-0102
    Size p. 23-32.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 2016344-7
    ISSN 1651-1891 ; 0282-7581
    ISSN (online) 1651-1891
    ISSN 0282-7581
    DOI 10.1080/02827581.2021.2009022
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  3. Article: Morphological, physiological, biochemical and molecular analyses reveal wounding-induced agarwood formation mechanism in two types of Aquilaria sinensis (Lour.) Spreng

    Zhang, Peng / Li, Xiaofei / Cui, Zhiyi / Xu, Daping

    Industrial crops and products. 2022 Apr., v. 178

    2022  

    Abstract: Agarwood, a resinous portion of injured Aquilaria trees, has become scarce and precious because of its low yields in ordinary Aquilaria sinensis. A new type of A. sinensis, namely easier induced agarwood A. sinensis germplasm (EIAA), has recently been ... ...

    Abstract Agarwood, a resinous portion of injured Aquilaria trees, has become scarce and precious because of its low yields in ordinary Aquilaria sinensis. A new type of A. sinensis, namely easier induced agarwood A. sinensis germplasm (EIAA), has recently been selected and cultivated. However, no information has been reported about its agarwood formation mechanism yet. Multiple approaches, including anatomical, physiological, biochemical and molecular profiling, were employed in this study to investigate wounding-induced agarwood formation in two types of A sinensis. After mechanical damage, the related physiological and biochemical parameters regulating defense response were increased significantly, while the related parameters regulating growth were decreased significantly in two types of A sinensis. The strength of defense response was decreased and the growth performance was recovered over time. Compared to ordinary A. sinensis, EIAA showed higher hormones levels of salicylic acid, jasmonic acid and ethylene, higher activities of antioxidant enzymes, more total phenols and terpenes, higher net photosynthetic rate and photochemical efficiency of PSII, more consumption of non-structural carbohydrates, higher agarwood yield and oil content. There were marked differences in the components of agarwood essential oils between two types of A. sinensis. In particularly for 2-(2-phenylethyl) chromone and 2-[2-(4′-methoxybenzene) ethyl] chromone, their richness in agarwood essential oil of EIAA was significantly higher in contrast with the ordinary A. sinensis agarwood. Differentially expressed genes further ensured the differences in defense responses to wounding stress and secondary metabolism patterns between two types of A. sinensis. These data collectively demonstrate that there is a tradeoff between growth and defense during wounding-induced agarwood formation and EIAA had stronger defense ability in physiological and biochemical levels compared with ordinary A. sinensis. This is the physiological mechanism by which EIAA has higher agarwood yield and essential oil content. Moreover, the differential expression of flavonoid biosynthesis-related genes explained the different chromone synthesis pathways between two types of A. sinensis. These findings provide new insights into wounding-induced agarwood formation mechanism in A. sinensis, especially for EIAA.
    Keywords Aquilaria sinensis ; antioxidants ; essential oils ; ethylene ; flavonoids ; gene expression regulation ; germplasm ; growth performance ; jasmonic acid ; lipid content ; mechanical damage ; photochemistry ; photosystem II ; salicylic acid ; terpenoids
    Language English
    Dates of publication 2022-04
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1132158-1
    ISSN 1872-633X ; 0926-6690
    ISSN (online) 1872-633X
    ISSN 0926-6690
    DOI 10.1016/j.indcrop.2022.114603
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    In stock of ZB MED Bonn / Germany

    Z 5577: Show issues

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  4. Article: Anatomical, chemical and endophytic fungal diversity of a Qi-Nan clone of

    Li, Xiaofei / Fang, Xiaoying / Cui, Zhiyi / Hong, Zhou / Liu, Xiaojin / Li, Gaiyun / Hu, Houzhen / Xu, Daping

    Frontiers in plant science

    2024  Volume 15, Page(s) 1320226

    Abstract: Recently, some new Qi-Nan clones ... ...

    Abstract Recently, some new Qi-Nan clones of
    Language English
    Publishing date 2024-03-25
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2613694-6
    ISSN 1664-462X
    ISSN 1664-462X
    DOI 10.3389/fpls.2024.1320226
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  5. Article: Polysaccharide, proline, and anti-oxidation enzyme activities of Thailand rosewood (Dalbergia cochinchinensis) seedlings exposed to exponential fertilization

    Hong, Zhou / Guo, Junyu / Zhang, Ningnan / Yang, Zengjiang / Liu, Xiaojing / Cui, Zhiyi / Xu, Daping

    Journal of forestry research. 2022 Feb., v. 33, no. 1

    2022  

    Abstract: Thailand rosewood (Dalbergia cochinchinensis) is a vulnerable high value tree species in subtropical and tropical Southeast Asia. The demand for the rehabilitation of the natural habitat of the species requires high-quality seedlings. However, current ... ...

    Abstract Thailand rosewood (Dalbergia cochinchinensis) is a vulnerable high value tree species in subtropical and tropical Southeast Asia. The demand for the rehabilitation of the natural habitat of the species requires high-quality seedlings. However, current fertilizer regimes tend to deliver a coarse rate of fertilizers that result in a low uptake efficiency and a high risk of nutrient excess. Exponential fertilization is an effective approach to promote seedling quality through identifying an optimum dose out of a range of applications. In this study, Thailand rosewood seedlings were cultured in a mixed substrate of perlite, vermiculite, and peat (2:2:3, v/v/v) and received exponential fertilization from 0 (control), through 100, 200, 300, 400, and 600 mg nitrogen (N) per plant over a four-month cultural rotation. Height, diameter, and shoot biomass increased with fertilizer rate and were maximized at 300 mg N per plant. This application also reduced nutrient deficiencies and avoided excess supply compared to higher rates. Polysaccharide, proline, and anti-oxidation enzyme activities tended to be greater in unfertilized controls or in over-fertilized high dosages, with lower activities around 100–300 mg N plant⁻¹. Application of 300 mg N per plant was identified as the optimum dosage as it maximized nutrient reserves, polysaccharide and proline contents, and anti-oxidants without causing any symptoms from excess fertilizer toxicity. Future work is required to identify the effects of N-fixation on the formation of nutritional reserves in Thailand rosewood seedlings subjected to exponential fertilization.
    Keywords Dalbergia cochinchinensis ; antioxidants ; biomass ; enzymes ; fertilizer rates ; fertilizers ; forestry ; habitats ; nitrogen ; nitrogen fixation ; nutrient excess ; peat ; perlite ; polysaccharides ; proline ; research ; risk ; seedlings ; toxicity ; trees ; vermiculite ; Thailand
    Language English
    Dates of publication 2022-02
    Size p. 75-87.
    Publishing place Springer Singapore
    Document type Article
    ZDB-ID 2299615-1
    ISSN 1993-0607 ; 1007-662X
    ISSN (online) 1993-0607
    ISSN 1007-662X
    DOI 10.1007/s11676-021-01300-4
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  6. Article ; Online: Complete chloroplast genome sequence of

    Liu, Xiaojin / Xu, Daping / Zhang, Ningnan / Hong, Zhou

    Mitochondrial DNA. Part B, Resources

    2020  Volume 5, Issue 3, Page(s) 2819–2820

    Abstract: ... Homalium ... ...

    Abstract Homalium hainanense
    Language English
    Publishing date 2020-07-15
    Publishing country England
    Document type Journal Article
    ISSN 2380-2359
    ISSN (online) 2380-2359
    DOI 10.1080/23802359.2020.1789514
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  7. Article: Changes in Non-Structural Carbohydrates, Wood Properties and Essential Oil During Chemically-Induced Heartwood Formation in

    Cui, Zhiyi / Li, Xiaofei / Xu, Daping / Yang, Zengjiang

    Frontiers in plant science

    2020  Volume 11, Page(s) 1161

    Abstract: The highly valuable heartwood ... ...

    Abstract The highly valuable heartwood of
    Language English
    Publishing date 2020-08-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2711035-7
    ISSN 1664-462X
    ISSN 1664-462X
    DOI 10.3389/fpls.2020.01161
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Effects of Drought and Host on the Growth of

    Zhang, Qilei / Liu, Xiaojin / Xu, Daping / Hong, Zhou / Zhang, Ningnan / Cui, Zhiyi

    International journal of molecular sciences

    2022  Volume 23, Issue 19

    Abstract: ... Santalum ... ...

    Abstract Santalum album
    MeSH term(s) Antioxidants/metabolism ; Droughts ; Malondialdehyde/metabolism ; Photosynthesis/physiology ; Plant Leaves/metabolism ; Proline/metabolism ; Santalum ; Seedlings/metabolism ; Stress, Physiological ; Sugars/metabolism ; Water/metabolism
    Chemical Substances Antioxidants ; Sugars ; Water (059QF0KO0R) ; Malondialdehyde (4Y8F71G49Q) ; Proline (9DLQ4CIU6V)
    Language English
    Publishing date 2022-09-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms231911241
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  9. Article ; Online: Chromosome-level genome assemblies from two sandalwood species provide insights into the evolution of the Santalales.

    Hong, Zhou / Peng, Dan / Tembrock, Luke R / Liao, Xuezhu / Xu, Daping / Liu, Xiaojin / Wu, Zhiqiang

    Communications biology

    2023  Volume 6, Issue 1, Page(s) 587

    Abstract: Sandalwood is one of the most expensive woods in the world and is well known for its long-lasting and distinctive aroma. In our study, chromosome-level genome assemblies for two sandalwood species (Santalum album and Santalum yasi) were constructed by ... ...

    Abstract Sandalwood is one of the most expensive woods in the world and is well known for its long-lasting and distinctive aroma. In our study, chromosome-level genome assemblies for two sandalwood species (Santalum album and Santalum yasi) were constructed by integrating NGS short reads, RNA-seq, and Hi-C libraries with PacBio HiFi long reads. The S. album and S. yasi genomes were both assembled into 10 pseudochromosomes with a length of 229.59 Mb and 232.64 Mb, containing 21,673 and 22,816 predicted genes and a repeat content of 28.93% and 29.54% of the total genomes, respectively. Further analyses resolved a Santalum-specific whole-genome triplication event after divergence from ancestors of the Santalales lineage Malania, yet due to dramatic differences in transposon content, the Santalum genomes were only one-sixth the size of the Malania oleifera genome. Examination of RNA-seq data revealed a suite of genes that are differentially expressed in haustoria and might be involved in host hemiparasite interactions. The two genomes presented here not only provide an important comparative dataset for studying genome evolution in early diverging eudicots and hemiparasitic plants but will also hasten the application of conservation genomics for a lineage of trees recovering from decades of overexploitation.
    MeSH term(s) Santalum/genetics ; Sesquiterpenes ; Genomics ; Trees ; Chromosomes
    Chemical Substances Sesquiterpenes
    Language English
    Publishing date 2023-06-01
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-023-04980-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Author Correction: Chromosome-level genome assemblies from two sandalwood species provide insights into the evolution of the Santalales.

    Hong, Zhou / Peng, Dan / Tembrock, Luke R / Liao, Xuezhu / Xu, Daping / Liu, Xiaojin / Wu, Zhiqiang

    Communications biology

    2023  Volume 6, Issue 1, Page(s) 675

    Language English
    Publishing date 2023-06-28
    Publishing country England
    Document type Published Erratum
    ISSN 2399-3642
    ISSN (online) 2399-3642
    DOI 10.1038/s42003-023-05062-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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