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  1. Article ; Online: Cryptochromes: Photochemical and structural insight into magnetoreception.

    Karki, Nischal / Vergish, Satyam / Zoltowski, Brian D

    Protein science : a publication of the Protein Society

    2021  Volume 30, Issue 8, Page(s) 1521–1534

    Abstract: Cryptochromes (CRYs) function as blue light photoreceptors in diverse physiological processes in nearly all kingdoms of life. Over the past several decades, they have emerged as the most likely candidates for light-dependent magnetoreception in animals, ... ...

    Abstract Cryptochromes (CRYs) function as blue light photoreceptors in diverse physiological processes in nearly all kingdoms of life. Over the past several decades, they have emerged as the most likely candidates for light-dependent magnetoreception in animals, however, a long history of conflicts between in vitro photochemistry and in vivo behavioral data complicate validation of CRYs as a magnetosensor. In this review, we highlight the origins of conflicts regarding CRY photochemistry and signal transduction, and identify recent data that provides clarity on potential mechanisms of signal transduction in magnetoreception. The review primarily focuses on examining differences in photochemistry and signal transduction in plant and animal CRYs, and identifies potential modes of convergent evolution within these independent lineages that may identify conserved signaling pathways.
    MeSH term(s) Animals ; Cryptochromes ; Magnetic Phenomena ; Models, Molecular ; Photobiology ; Photochemistry ; Plants/chemistry ; Plants/metabolism ; Signal Transduction
    Chemical Substances Cryptochromes
    Language English
    Publishing date 2021-06-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 1106283-6
    ISSN 1469-896X ; 0961-8368
    ISSN (online) 1469-896X
    ISSN 0961-8368
    DOI 10.1002/pro.4124
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 3407: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (2.OG)
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  2. Article ; Online: OsCRY2 and OsFBO10 co-regulate photomorphogenesis and photoperiodic flowering in indica rice.

    Singh, Shipra / Vergish, Satyam / Jain, Nitin / Sharma, Arun Kumar / Khurana, Paramjit / Khurana, Jitendra P

    Plant science : an international journal of experimental plant biology

    2023  Volume 330, Page(s) 111631

    Abstract: Cryptochromes (CRYs) are a class of photoreceptors that perceive blue/ultraviolet-A light of the visible spectrum to mediate a vast number of physiological responses in bacteria, fungi, animals and plants. In the present study, we have characterized ... ...

    Abstract Cryptochromes (CRYs) are a class of photoreceptors that perceive blue/ultraviolet-A light of the visible spectrum to mediate a vast number of physiological responses in bacteria, fungi, animals and plants. In the present study, we have characterized OsCRY2 in a photoperiod sensitive indica variety, Basmati 370, by generating and analyzing overexpression (OE) and knock-down (KD) transgenic lines. The OsCRY2
    MeSH term(s) Photoperiod ; Oryza/genetics ; Oryza/metabolism ; Arabidopsis/genetics ; Arabidopsis Proteins/metabolism ; Flowers/metabolism ; Plants/metabolism ; Gene Expression Regulation, Plant ; Light
    Chemical Substances Arabidopsis Proteins ; ZTL protein, Arabidopsis ; FKF1 protein, Arabidopsis ; LKP2 protein, Arabidopsis
    Language English
    Publishing date 2023-02-10
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 742010-9
    ISSN 1873-2259 ; 0168-9452
    ISSN (online) 1873-2259
    ISSN 0168-9452
    DOI 10.1016/j.plantsci.2023.111631
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  3. Article ; Online: Validation of house-keeping genes for normalization of gene expression data during diurnal/circadian studies in rice by RT-qPCR.

    Jain, Nitin / Vergish, Satyam / Khurana, Jitendra P

    Scientific reports

    2018  Volume 8, Issue 1, Page(s) 3203

    Abstract: The circadian clock in plants is the intrinsic rhythmic expression of thousands of genes in a 24 h period, which is set by the day-night cycles in the environment. The study of the circadian clock often requires expression profiling of genes over a large ...

    Abstract The circadian clock in plants is the intrinsic rhythmic expression of thousands of genes in a 24 h period, which is set by the day-night cycles in the environment. The study of the circadian clock often requires expression profiling of genes over a large number of samples for which RT-qPCR is invariably used. Reliability of the results depends largely on the house-keeping genes, which serve as control and thus should be chosen carefully to prevent erroneous results. In this study, ten house-keeping genes were chosen from rice for stability analysis with 48 tissue samples harvested from plants subjected to diurnal/circadian cycles. Although, all the genes were found to be stable, however, six of them showed cyclic expression patterns and caused major changes in the expression profiles of the target genes when used to normalize their expression data, thereby making them poor candidates for diurnal/circadian studies. In conclusion, reference genes need to be selected for diurnal/circadian studies with extra caution as more than 80% of transcriptome in plants undergoes cycling, which remains undetected by the gene stability assessment software and can severely affect the RT-qPCR based gene expression profiling. The geometric mean of two or more most stable reference genes is hence recommended for diurnal/circadian studies in plants.
    MeSH term(s) Circadian Clocks/genetics ; Gene Expression Regulation, Plant/physiology ; Genes, Essential/genetics ; Genes, Plant ; Oryza/genetics ; Real-Time Polymerase Chain Reaction ; Reference Standards
    Language English
    Publishing date 2018-02-16
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-018-21374-1
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  4. Article: OsCRY2 and OsFBO10 co-regulate photomorphogenesis and photoperiodic flowering in indica rice

    Singh, Shipra / Vergish, Satyam / Jain, Nitin / Kumar, Arun / Khurana, Paramjit / Khurana, Jitendra P.

    Plant Science. , p.111631-

    Page(s) 111631–

    Abstract: Cryptochromes (CRYs) are a class of photoreceptors that perceive blue/ultraviolet-A light of visible spectrum to mediate vast number of physiological responses in bacteria, fungi, animals and plants. In the present study, we have characterized OsCRY2 in ... ...

    Abstract Cryptochromes (CRYs) are a class of photoreceptors that perceive blue/ultraviolet-A light of visible spectrum to mediate vast number of physiological responses in bacteria, fungi, animals and plants. In the present study, we have characterized OsCRY2 in a photoperiod sensitive indica variety, Basmati 370, by generating and analyzing overexpression (OE) and knock-down (KD) transgenic lines. The OsCRY2ᴼᴱ lines displayed dwarfism as shown in their reduced plant height and leaf length, attributed largely by an overall reduction in their cell size. The OsCRY2ᴼᴱ lines flowered significantly earlier and showed shorter and broader seeds with an overall reduced seed weight. The OsCRY2ᴷᴰ lines showed contrasting phenotypes, such as increased plant height and delayed flowering, however, decreased seed size and weight was observed also in the KD lines, along with reduced spikelet fertility and high seed shattering rate in mature panicles. Novel interactions were confirmed between OsCRY2 and members of ZEITLUPE family of blue/ultraviolet-A light photoreceptors, encoded by OsFBO8, OsFBO9 and OsFBO10 which are orthologous to ZEITLUPE (ZTL), LOV KELCH PROTEIN2 (LKP2) and FLAVIN BINDING, KELCH REPEAT F-BOX1 (FKF1), respectively, of Arabidopsis thaliana. Since FKF1 is known to play a role in regulating photoperiodic flowering, OsFBO10 was chosen for further studies. OsCRY2 and OsFBO10 interacted in the nucleus and cytoplasm of the cell and cross-regulated the expression of each other. They were also found to regulate expression of several genes involved in photoperiodic flowering in rice. Both OsCRY2 and OsFBO10 played positive role in photomorphogenic responses in different light conditions. The physical interaction of OsCRY2 with OsFBO10, their involvement in common physiological and developmental pathways and their cross regulation of each other suggest that the two photoreceptors may regulate common developmental pathways in plants, either jointly or redundantly.
    Keywords Arabidopsis thaliana ; cryptochromes ; cytoplasm ; dwarfing ; genetically modified organisms ; leaf length ; photomorphogenesis ; plant height ; rice ; seed size ; seed weight ; spikelets ; Light signaling ; OsCRY2 ; OsFBO10 ; photoperiodic flowering
    Publishing place Elsevier B.V.
    Document type Article
    Note Pre-press version
    ZDB-ID 742010-9
    ISSN 1873-2259 ; 0168-9452
    ISSN (online) 1873-2259
    ISSN 0168-9452
    DOI 10.1016/j.plantsci.2023.111631
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 77/717: Show issues

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