Overexpression of Arabidopsis XERICO gene confers enhanced drought and salt stress tolerance in rice (Oryza Sativa L.)

Zeng, De-Er; Hou, Pei; Xiao, Fangming; Liu, Yongsheng

doi:10.1007/s13562-013-0236-4

Cited by 36 publications

(33 citation statements)

References 32 publications

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“…When GA level is low, DELLA activates the expression of XERICO , which in turn enhances ABA accumulation and activates the transcription of ABI5 , leading to dormancy maintenance/inhibition of seed germination. Consistently, overexpression of XERICO in rice results in increased ABA level and response via enhancing the expression of OsNCED1 and OsABI5 , respectively, causing a delay in germination ( Zeng et al, 2014 , 2015 ). Its overexpression in maize also leads to ABA accumulation via modulating the expression of ZmCYP707A rather than that of the ZmNCED genes as observed in rice ( Brugière et al, 2017 ).…”

Section: Abscisic Acid/gibberellin Balance Controls Seed Dormancy Andmentioning

confidence: 75%

Molecular Mechanisms Underlying Abscisic Acid/Gibberellin Balance in the Control of Seed Dormancy and Germination in Cereals

et al. 2018

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Seed dormancy is an adaptive trait that does not allow the germination of an intact viable seed under favorable environmental conditions. Non-dormant seeds or seeds with low level of dormancy can germinate readily under optimal environmental conditions, and such a trait leads to preharvest sprouting, germination of seeds on the mother plant prior to harvest, which significantly reduces the yield and quality of cereal crops. High level of dormancy, on the other hand, may lead to non-uniform germination and seedling establishment. Therefore, intermediate dormancy is considered to be a desirable trait as it prevents the problems of sprouting and allows uniformity of postharvest germination of seeds. Induction, maintenance, and release of seed dormancy are complex physiological processes that are influenced by a wide range of endogenous and environmental factors. Plant hormones, mainly abscisic acid (ABA) and gibberellin (GA), are the major endogenous factors that act antagonistically in the control of seed dormancy and germination; ABA positively regulates the induction and maintenance of dormancy, while GA enhances germination. Significant progress has been made in recent years in the elucidation of molecular mechanisms regulating ABA/GA balance and thereby dormancy and germination in cereal seeds, and this review summarizes the current state of knowledge on the topic.

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Section: Abscisic Acid/gibberellin Balance Controls Seed Dormancy Andmentioning

confidence: 75%

Molecular Mechanisms Underlying Abscisic Acid/Gibberellin Balance in the Control of Seed Dormancy and Germination in Cereals

et al. 2018

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“…Thus, the expression of the gene NCED, involved directly in the synthesis of ABA, had an important effect in the response to abiotic stress but also in the seed germination and maturation, highlighting the crosslink between both events [132]. Alterations in the transporters that allow for ABA storage and translocation were also observed under drought [133] or salt and osmotic stress [134,135]. Also, the GA signaling pathway promoted DELLA protein degradation that formed a complex with the transcription factor DOF6, resulting in a positive effect on genes such as RGL2, involved in seed germination response under salt stress [136].…”

Section: Seed Genes To Cope With Abiotic Stressmentioning

confidence: 99%

The Importance of Ion Homeostasis and Nutrient Status in Seed Development and Germination

et al. 2020

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Seed is the dissemination unit of plants initiating an important stage in the life cycle of plants. Seed development, comprising two phases: embryogenesis and seed maturation, may define the quality of sown seed, especially under abiotic stress. In this review we have focused on the recent advances in the molecular mechanisms underlying these complex processes and how they are controlled by distinct environmental factors regulating ion homeostasis into the seed tissues. The role of transporters affecting seed embryogenesis and first stages of germination as imbibition and subsequent radicle protrusion and extension were revised from a molecular point of view. Seed formation depends on the loading of nutrients from the maternal seed coat to the filial endosperm, a process of which the efflux is not clear and where different ions and transporters are involved. The clear interrelation between soil nutrients, presence of heavy metals and the ion capacity of penetration through the seed are discussed in terms of ion effect during different germination stages. Results concerning seed priming techniques used in the improvement of seed vigor and radicle emergence are shown, where the use of nutrients as a novel way of osmopriming to alleviate abiotic stress effects and improve seedlings yield is discussed. Novel approaches to know the re-translocation from source leaves to developing seeds are considered, as an essential mechanism to understand the biofortification process of certain grains in order to cope with nutrient deficiencies, especially in arid and semiarid areas. Finally, the role of new genes involved in hormone-dependent processes, oxidative response and water uptake into the seeds during their development or germination, have been described as plant mechanisms to deal with abiotic stresses.

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“…Research reported that, under salt stress, the GAs content of A. thaliana decrease, while the accumulation of negative regulatory factor DELLA protein increased . DELLA improves the drought and salt tolerance by inhibiting GAs synthesis and inducing ABA synthesis through XERICO induction .…”

Section: Introductionmentioning

confidence: 99%

The role of gibberellin synthase geneGhGA2ox1in upland cotton (Gossypium hirsutumL.) responses to drought and salt stress

Shi

Wang

Zhou

et al. 2019

Biotech and App Biochem

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Gibberellins (GAs) is one kind of important endogenous hormone in plants that regulates vegetative and reproductive growth of plants. GA2ox is a class of oxidase that plays a regulatory role in the third stage of GAs synthesis. In this paper, we cloned the GhGA2ox1 gene from an upland cotton (Gossypium hirsutum L. var. CCRI49). The results showed that the CDS of GhGA2ox1 is 996 bp, which encode 331 amino acids, which has high homology with GhGA2ox2 and NtGA2ox1. The quantitative real-time PCR showed that under the conditions of salt and drought stress, the expression of GhGA2ox1 had a higher upregulation in root, stem, and leaf of transgenic plant, compared with non-transgenic plant. Cotton plant that overexpressed the GhGA2ox1 gene showed higher drought and salt tolerance than non-transgenic cotton plant, and these results were supported by data of higher free proline, chlorophyll, and relative water content in transgenic plant compared with control plant. The expression level of antiretroviral genes, including GhEREB2, GhDREB1, GhWRKY5, and GhP5CS, was upregulated to varying degrees in transgenic plant. The above results indicate that overexpressed GhGA2ox1 gene can increases the tolerance to respond to drought and salt stress in upland cotton. C 2019

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Overexpression of Arabidopsis XERICO gene confers enhanced drought and salt stress tolerance in rice (Oryza Sativa L.)

Cited by 36 publications

References 32 publications

Molecular Mechanisms Underlying Abscisic Acid/Gibberellin Balance in the Control of Seed Dormancy and Germination in Cereals

Molecular Mechanisms Underlying Abscisic Acid/Gibberellin Balance in the Control of Seed Dormancy and Germination in Cereals

The Importance of Ion Homeostasis and Nutrient Status in Seed Development and Germination

The role of gibberellin synthase geneGhGA2ox1in upland cotton (Gossypium hirsutumL.) responses to drought and salt stress

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