2015
DOI: 10.1093/jxb/erv390
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Staying green postharvest: how three mutations in theArabidopsischlorophyllbreductase geneNYC1delay degreening by distinct mechanisms

Abstract: Stresses such as energy deprivation, wounding and water-supply disruption often contribute to rapid deterioration of harvested tissues. To uncover the genetic regulation behind such stresses, a simple assessment system was used to detect senescence mutants in conjunction with two rapid mapping techniques to identify the causal mutations. To demonstrate the power of this approach, immature inflorescences of Arabidopsis plants that contained ethyl methanesulfonate-induced lesions were detached and screened for a… Show more

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Cited by 30 publications
(23 citation statements)
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“…For example, proline accumulation was increased fourfold under osmotic stress in a resistant maize cultivar, and proline helps to stabilize subcellular structures in the control of osmolytes. Additionally, exogenous application of proline affects plant growth and photosynthesis, and improves the drought tolerance response (Hayat et al 2012; Jibran et al 2015; Rai 2002). …”
Section: Discussionmentioning
confidence: 99%
“…For example, proline accumulation was increased fourfold under osmotic stress in a resistant maize cultivar, and proline helps to stabilize subcellular structures in the control of osmolytes. Additionally, exogenous application of proline affects plant growth and photosynthesis, and improves the drought tolerance response (Hayat et al 2012; Jibran et al 2015; Rai 2002). …”
Section: Discussionmentioning
confidence: 99%
“…It revealed that 499 up- and 96 down-regulated genes in total were identified in the ZjSGR -overexpressing plants, implying a preferential role of ZjSGR in regulating gene expression. SEN1, NYC1, SAG21, SAG14 , and SAG39 were selected as positive markers to monitor the senescence progress in plants (Jing et al, 2002; Ren et al, 2010; Zhou et al, 2011; Jibran et al, 2015; Salleh et al, 2016). The expression levels of all the senescence related DEGs in ZjSGR -overexpressing plants were proved to be up-regulated, implying that the accelerated senescence progress in the transgenic plants.…”
Section: Discussionmentioning
confidence: 99%
“…By ultrastructual analysis, chloroplasts were proved to be the first organelles to be dismantled in senescence process (Dodge, 1970). Because the chloroplasts contain the majority of leaf protein that are attuned to be recycled during senescence in plants, the metabolic changes in chloroplasts may lead to drastic downstream regulation, suggesting the essential role of chloroplast disassembly in senescence (Jibran et al, 2015; Lin et al, 2015). Chlorophyll degrades via the multistep pheophorbide a oxygenase (PAO) pathway during senescence, comprising several chloroplast-located reactions (Christ and Hörtensteiner, 2014).…”
Section: Introductionmentioning
confidence: 99%
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“…Additionally, Kusaba et al () found that the rice mutant defective in the gene for a CHLOROPHYLL b REDUCTASE ( NYC1 ) retained LHCII and grana during senescence. In the mutant of A. thaliana impaired in the NYCI gene, the stay‐green phenotype occurs not only during senescence in the light but also in the dark as is the case in the chlorophyll a oxygenase overexpressing plants (Jibran et al ). From these studies, it has been discussed that excessive chlorophyll b leads to activation of a signaling pathway connecting the chloroplast status and the nuclear gene expression (Sakuraba et al ).…”
Section: Dismantling Of the Antennamentioning
confidence: 99%