A Rice NAC Transcription Factor Promotes Leaf Senescence via ABA Biosynthesis
Citations
158 citations
Cites background from "A Rice NAC Transcription Factor Pro..."
...Shen et al., 2017; Mao et al., 2017...
[...]
...In rice, the NAC-type transcription factor OsNAC2 has been shown to regulate ABA-dependent genes and ABA biosynthesis, promoting leaf senescence by directly activating the expression of chlorophyll degradation-associated genes, leading to reduced stress tolerance (Shen et al., 2017; Mao et al., 2017)....
[...]
...Shen et al., 2017; Mao et al., 2017 Chloroplast turnover and chlorophyll metabolism Autophagy-related genes (ATG) mutants Arabidopsis thaliana Over-expression of ATG8f led to sensitivity to stress....
[...]
154 citations
Cites background or methods from "A Rice NAC Transcription Factor Pro..."
...Previous studies have shown that OsNAC2 directly binds to the promoters of the ABA metabolism-related genes OsNCED3, OsZEP1, and OsABA8ox1, which control the production of ABA in plants, and regulate ABA-dependent leaf senescence (Mao et al., 2017)....
[...]
...As expected, transcription levels of the senescence marker genes OsSGR, OsNAP, OsI85, and OsNAC2 in OE1 and OE2 dark-treated leaves were significantly higher compared to those of the wild type, whereas these genes were showed much lower expression in the nced3 lines than in the wild type (Figure 10E)....
[...]
...Dark treatment is an effective method to accelerate leaf senescence and ABA biosynthesis (Mao et al., 2017)....
[...]
...Furthermore, the transcription factors OsNAC2 and OsNAP participated in the aging process dependent on ABA biosynthesis and the leaf-senescence marker genes OsI85 and OsSGR (Chen et al., 2014; Mao et al., 2017)....
[...]
...(E) Relative expression of OsSGR, OsNAP, OsI85, and OsNAC2 genes after 3-day dark treatment in detached nced3-1,2 and OE-1,2 leaves....
[...]
121 citations
Cites background from "A Rice NAC Transcription Factor Pro..."
...…Yang et al., 2003; Lee et al., 2011; Zhao et al., 2016), the exogenous application of ABA can accelerate chlorophyll degradation (Quiles et al., 1995; Gao et al., 2016), and ABA-deficient mutants display delayed senescence in both rice (Mao et al., 2017) and Arabidopsis (Pourtau et al., 2004)....
[...]
...…family have been reported to be functionally involved in the regulation of leaf senescence in Arabidopsis and other plant species including wheat (Triticum aestivum; Uauy et al., 2006; Zhao et al., 2015), cotton (Gossypium hirsutum; Fan et al., 2015), and rice (Zhou et al., 2013; Mao et al., 2017)....
[...]
113 citations
Cites background from "A Rice NAC Transcription Factor Pro..."
...,2017), senescence (Mao et al., 2017) and programmed cell death (Mao et al....
[...]
...The tandem mass spectrometry analysis confirmed that the endogenous free IAA level was significantly higher in RNAi31 (378 ng/g fresh weight) than in WT (240 ng/g fresh weight) (Figure 4b)....
[...]
...6 and RNAi31*ckx4 homozygote....
[...]
...Furthermore, we observed that the meristem zone length of ON7 and ON11 plants was shorter while that of RNAi25 and RNAi31 plants was longer than the WT plants (Figure 2f)....
[...]
...We previously reported that reduced OsNAC2 expression leads to about 10% increase in the grain yield of RNAi lines (Mao et al., 2017)....
[...]
108 citations
References
2,359 citations
Additional excerpts
...ABA has vital function in stress responses and regulates various plant developments, e.g. seed maturation and dormancy, organ abscission, and leaf senescence (Chandler and Robertson, 1994; Cutler et al., 2010)....
[...]
...seed maturation and dormancy, organ abscission, and leaf senescence (Chandler and Robertson, 1994; Cutler et al., 2010)....
[...]
...ABA is generally considered as a senescence initiator (Cutler et al., 2010)....
[...]
1,890 citations
Additional excerpts
...In higher plants, the level of ABA is finely controlled by the balance between the rates of ABA biosynthesis and catabolism (Nambara and Marion-Poll, 2005)....
[...]
1,197 citations
1,195 citations
Additional excerpts
...Thus, we checked whether CACG sequences exist in the promoters of these five target genes....
[...]
...S5), which indicated CACG might also be the binding motif of OsNAC2....
[...]
...Previous work has defined the 4-bp core sequence of the NAC binding motif as CACG (Olsen et al., 2005)....
[...]
...NAC proteins, which belong to the CUC subfamily, have been demonstrated to play a pivotal part in plant development (Olsen et al., 2005), stress responses (Puranik et al....
[...]
...NAC binding motif CACG searching....
[...]
1,068 citations
"A Rice NAC Transcription Factor Pro..." refers background in this paper
...The recognition site of MYC2 appears to function as both positive and negative regulator of the expression of the MYC2 promoter-GUS fusion gene (Abe et al., 1997)....
[...]