After-Ripening Induced Transcriptional Changes of Hormonal Genes in Wheat Seeds: The Cases of Brassinosteroids, Ethylene, Cytokinin and Salicylic Acid

Chitnis, Vijaya R.; Gao, Feng; Yao, Zhen; Jordan, Mark C.; Park, Seokhoon; Ayele, Belay T.

doi:10.1371/journal.pone.0087543

Cited by 46 publications

(43 citation statements)

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“…Previous studies have described the significance of plant hormones in metabolic and signaling aspects and their probable role in the maintenance and release of dormancy in seeds of cereal crops [43,119,120]. Among plant growth hormones, abscisic acid (ABA) and gibberellin (GA) play important roles in regulation of dormancy and germination, ABA induces dormancy and GA stimulates seed germination [121,122].…”

Section: Plant Growth Hormonesmentioning

confidence: 99%

Unraveling Molecular and Genetic Studies of Wheat (Triticum aestivum L.) Resistance against Factors Causing Pre-Harvest Sprouting

et al. 2019

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Pre-harvest sprouting (PHS) is one of the most important factors having adverse effects on yield and grain quality all over the world, particularly in wet harvest conditions. PHS is controlled by both genetic and environmental factors and the interaction of these factors. Breeding varieties with high PHS resistance have important implications for reducing yield loss and improving grain quality. The rapid advancements in the wheat genomic database along with transcriptomic and proteomic technologies have broadened our knowledge for understanding the regulatory mechanism of PHS resistance at transcriptomic and post-transcriptomic levels. In this review, we have described in detail the recent advancements on factors influencing PHS resistance, including grain color, seed dormancy, α-amylase activity, plant hormones (especially abscisic acid and gibberellin), and QTL/genes, which are useful for mining new PHS-resistant genes and developing new molecular markers for multi-gene pyramiding breeding of wheat PHS resistance, and understanding the complicated regulatory mechanism of PHS resistance.

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Section: Plant Growth Hormonesmentioning

confidence: 99%

Unraveling Molecular and Genetic Studies of Wheat (Triticum aestivum L.) Resistance against Factors Causing Pre-Harvest Sprouting

et al. 2019

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“…It was shown that some genes associated with storage mobilization, cell wall modification were highly expressed in after-ripened seeds to dormant seeds of Arabidopsis and wheat [45,46]. Although transcriptional profiles and molecular mechanism underlying dormancy release by AR are conserved between species, there are their own unique regulatory mechanisms in different species [46,48]. In this study, seeds of LH14 display the obvious AR period during dry storage despite easily losing their dormancy.…”

Section: Discussionmentioning

confidence: 73%

Transcriptional Differences of Peanut (Arachis hypogaea L.) Seeds in the Fresh-harvest, After-ripened and Just-germinated States: insights into regulatory networks of seed dormancy-release and germination

Tang

Cui

et al. 2019

Preprint

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2Seed dormancy and germination are the two important traits related to plant survival and 3 reproduction, and crop yield. To understand their regulation mechanism, it is crucial to clarify 4 which genes or which pathways participate in the regulation of these processes. However, little 5 information is available during the procedure of seed dormancy and germination in peanut. In this 6 study, the seeds of the variety Luhua No.14 with non-deep dormancy were selected and its 7 transcriptional changes at three developmental stages: the fresh-harvest (FS), the after-ripened 8 (DS) and the just-germinated seeds (GS), were investigated by comparative transcriptomics 9 analysis. The results showed that genes with increased transcription in DS vs FS comparison were 10 overrepresented for oxidative phosphorylation, glycolysis pathway and tricarboxylic acid cycle 11 (TCA), suggesting that after a period of drying storage, the intermediates stored in dry seeds were 12 rapidly mobilized by glycolysis, TCA cycle, glyoxylate cycle, etc.; the electron transport chain 13 accompanying with respiration has been reactivated to provide ATP for mobilization of other 14 reserves and seed germination. In GS vs DS pairwise, dozens of the up-regulated genes were 15 related to plant hormone biosynthesis and signal transduction, including the majority of 16 components in auxin signal pathway, and brassinosteroid biosynthesis and signal transduction, and 17 some GA and ABA signal transduction genes. During seeds germination, the expression of some 18 EXPANSIN and XYLOGLUCAN ENDOTRANSGLYCOSYLASE was also significantly enhanced.19 To investigate the effect of different hormone during the procedure of seed germination, the 20 contents and the differential distribution of ABA, GA, BR and IAA in cotyledon, hypocotyl and 2 21 radicle, and plumule of three seed sections at different developmental stages were also detected.22 Combining with previous data in other species, a model of regulatory network related to peanut 23 seed germination was developed. This model will helpful to gain further understanding of the 24 mechanisms controlling seed dormancy and germination. Introduction 26Seed dormancy and germination are the two important traits in the plant life cycle, which 27 involve in the survival of a species and the offspring proliferation. Different plant species have 28 various classes of dormancy to regulate the timing of seed germination, help seedlings emerge 29 under favorable conditions. Primary dormancy of seeds is acquired during the seed maturation 30 phase, and reaches a high level in freshly harvested seeds. During subsequent dry period of seeds 31 (after-ripening), primary dormancy slowly reduces. When the dormancy level gradually decreases, 32 seeds can rapidly loose dormancy and proceed to germination during imbibition at favorable 33 conditions [1]. A recent research in Arabidopsis suggested that seed after-ripening is a specific 34 developmental pathway that is independent of germination potential and doesn't rely on ABA 35 regu...

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“…In O. sativa the cytokinin oxidase/dehydrogenase4 integrates the interaction between cytokinin and auxin signaling to control the crown root formation (Gao et al, 2014a). Response regulators (RRs) have been also characterized in O. sativa and T. aestivum (Chitnis et al, 2014).…”

Section: Cytokinin Response Regulatorsmentioning

confidence: 99%

Plant development regulation: Overview and perspectives

Yruela

2015

Journal of Plant Physiology

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Plant development, as occur in other eukaryotes, is conducted through a complex network of hormones, transcription factors, enzymes and micro RNAs, among other cellular components.They control developmental processes such as embryo, apical root and shoot meristem, leaf, flower, or seed formation, among others. The research in these topics has been very active in last decades. Recently, an explosion of new data concerning regulation mechanisms as well as the response of these processes to environmental changes has emerged. Initially, most of investigations were carried out in the model eudicot Arabidopsis but currently data from other plant species are available in the literature, although they are still limited. The aim of this review is focused on the current knowledge of main molecular actors involved in plant development regulation in diverse plant species. A special attention will be given to the major families of genes and proteins participating in these mechanisms. The information on the regulatory pathways where they participate will be briefly cited. Additionally, he importance of certain structural features of such proteins that confer ductility and flexibility to these mechanisms will also be reported and discussed.

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After-Ripening Induced Transcriptional Changes of Hormonal Genes in Wheat Seeds: The Cases of Brassinosteroids, Ethylene, Cytokinin and Salicylic Acid

Cited by 46 publications

References 62 publications

Unraveling Molecular and Genetic Studies of Wheat (Triticum aestivum L.) Resistance against Factors Causing Pre-Harvest Sprouting

Unraveling Molecular and Genetic Studies of Wheat (Triticum aestivum L.) Resistance against Factors Causing Pre-Harvest Sprouting

Transcriptional Differences of Peanut (Arachis hypogaea L.) Seeds in the Fresh-harvest, After-ripened and Just-germinated States: insights into regulatory networks of seed dormancy-release and germination

Plant development regulation: Overview and perspectives

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