Control of Plant Water Use by ABA Induction of Senescence and Dormancy: An Overlooked Lesson from Evolution

Zhao, Yanping; Gao, Jinghui; Kim, Jeong Im; Chen, Kong; Bressan, Ray A.; Zhu, Jian‐Kang

doi:10.1093/pcp/pcx086

Cited by 61 publications

(52 citation statements)

References 104 publications

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“…However, many details of ABFs regulation of water stress response remain unclear (Yoshida et al 2010, 2015). Abscisic acid also activates the expression of genes controlling wax synthesis helping to block water loss from leaves (Cui et al 2016; Zhao et al 2016, 2017). The expression of wax‐synthesis‐related genes, KCS2 , CER1 , LTP3 , and WSD1 , are strongly decreased in snrk2.2/3/6 and abi1‐1 mutants but are increased in pRD29A‐PYL9 transgenic plants (Zhao et al 2016).…”

Section: The Role Of Aba In Plants During Several Developmental Stagesmentioning

confidence: 99%

“…ABFs, such as ABI5 and EEL, also participate in dark‐induced senescence (Sakuraba et al 2014). Abscisic acid systematically controls energy flow from source tissues (senescent leaves) to sink tissues (dormant seeds and floral meristem) (Zhao et al 2016, 2017). The floral meristems, under appropriate conditions, develop into dormant embryos.…”

Section: The Role Of Aba In Plants During Several Developmental Stagesmentioning

confidence: 99%

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Abscisic acid dynamics, signaling, and functions in plants

Chen

Bressan

et al. 2020

JIPB

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1,026

628

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Abscisic acid (ABA) is an important phytohormone regulating plant growth, development, and stress responses. It has an essential role in multiple physiological processes of plants, such as stomatal closure, cuticular wax accumulation, leaf senescence, bud dormancy, seed germination, osmotic regulation, and growth inhibition among many others. Abscisic acid controls downstream responses to abiotic and biotic environmental changes through both transcriptional and posttranscriptional mechanisms. During the past 20 years, ABA biosynthesis and many of its signaling pathways have been well characterized. Here we review the dynamics of ABA metabolic pools and signaling that affects many of its physiological functions.

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Section: The Role Of Aba In Plants During Several Developmental Stagesmentioning

confidence: 99%

Section: The Role Of Aba In Plants During Several Developmental Stagesmentioning

confidence: 99%

Abscisic acid dynamics, signaling, and functions in plants

Chen

Bressan

et al. 2020

JIPB

Self Cite

1,026

628

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“…Global warming is causing a reduction in the productivity and survival of plants -including crops (29). It also adversely affects seed germination.…”

Section: Discussionmentioning

confidence: 99%

“…Initiation of leaf senescence is affected by various factors including age, abiotic and biotic stress, and plant hormones (36,37). Effects of plant hormones on senescence such as auxin, cytokinin, gibberellin, ethylene ABA, SA and JA are well-known (29,35,36). Moreover, the effect of KAR1 on leaf senescence is still lacking in the literature.…”

Section: Discussionmentioning

confidence: 99%

Karrikinolide Promotes Seed Germination but Has no Effect on Leaf Segment Senescence in Triticum aestivum L.

Sağlam¹,

Duygun²,

Kaya³

et al. 2019

Eur J Biol

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Objective: Germination and senescence are the two most important developmental processes in the plant life cycle. While seed germination is an important physiological event for the continuity of species, leaf senescence is also an important developmental process that impacts crop yields. Karrikins are a group of plant growth regulators found in the smoke generated by burning plant material. It has been suggested that karrikinolide (KAR1) is generally the most active karrikin in terms of stimulating germination. Materials and Methods: In this study, the effect of karrikinolide on germination and leaf segment senescence in wheat was investigated. For this purpose, control, 1 nM, 0.01, 0.1, 1, and 10 μM KAR1 solutions were used. Firstly, the wheat seeds were germinated in the dark in these solutions and germination percentages and root lengths were measured. Secondly, 4 of first leaf segments (3cm. each) from 10-day-old wheat seedlings were placed in petri dishes containing 1, 10, 100 μM KAR1 and distilled water as a control. Following incubation, fresh weight, chlorophyll content, cell death amounts and total protein amounts were determined. Results: The obtained data shows that 1 μM KAR1 promotes germination and root length to the greatest extent. This suggests that karrikins have a promoting effect on the germination of wheat seeds. Our results demonstrate that KAR1 has no effect on leaf segment senescence. Conclusion: Our study suggests that KAR1 has the potential to be used in agriculture to improve germination and seedling growth of crop species.

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“…Therefore, only a few plant signal receptors have been identi ed. For example, the ABA signaling pathway is a widely studied drought response signaling pathway in plants that is considered to be the "core" signaling pathway under di cult levels of stress [4]. Under drought stress, ABA can regulate stomatal closure, inhibit growth and promote leaf senescence, thus improving the rate of survival of plant.…”

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confidence: 99%

Transcriptome changes induced by drought stress in Jerusalem artichoke (Helianthus tuberosus L.) and weighted gene co-expression network analysis (WGCNA)

Yang¹,

Wang²,

Zhong³

et al. 2020

Preprint

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Background: Jerusalem artichoke (Helianthus tuberosus L.) is strongly resistant to stress and an important plant used for ecological management in northern China in recent years. Currently, Jerusalem artichoke has been widely planted in the area around Qinghai Lake in Qinghai Province, China. Jerusalem artichoke can not only prevent land desertification but also has maintain most of its level of production. However, there is little research on the mechanism of drought resistance of Jerusalem artichoke.Results: We conducted transcriptome sequencing under drought stress and normal watering treatment for two varieties, QY1 and QY3, with differing degrees of drought tolerance. In the three stress periods of QY1 and QY3, 5,613, 12,985 and 24,923 differentially expressed genes (DEGs) were identified, respectively. GO analysis showed that there were more DEGs in QY1 than in QY3, but there were more up-regulated genes in QY3 than in QY1. Based on an additional analysis of the metabolic pathways under drought stress using MapMan, the most different types of metabolism included secondary metabolism, light reaction metabolism and cell wall. The up-regulated genes in QY3 were significantly more prevalent than those in QY1 and were primarily concentrated in flavor IDS, phenylpropanoids, and the shikimate and terpenoids pathway. As a whole, QY1 and QY3 both had a large number of up-regulated genes in the flavor pathway. In addition, the gene analysis of the ABA key metabolic pathway showed that QY3 had more genes in NAC and WRKY than QY1. A weighted gene co-expression network was constructed and divided into modules. By specifically analyzing the expressed modules, four modules were found to have the highest correlation with drought. Further research on the genes revealed that all 16 genes related to histone, ABA and protein kinase were the most significant in these pathways.Conclusions: In summary, these findings represent the first RNA-Seq analysis of drought stress in Jerusalem artichoke, which is of substantial significance to explore the function of drought resistance in Jerusalem artichoke and the unearthing of related genes.

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Control of Plant Water Use by ABA Induction of Senescence and Dormancy: An Overlooked Lesson from Evolution

Cited by 61 publications

References 104 publications

Abscisic acid dynamics, signaling, and functions in plants

Abscisic acid dynamics, signaling, and functions in plants

Karrikinolide Promotes Seed Germination but Has no Effect on Leaf Segment Senescence in Triticum aestivum L.

Transcriptome changes induced by drought stress in Jerusalem artichoke (Helianthus tuberosus L.) and weighted gene co-expression network analysis (WGCNA)

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