Overexpression of StGA2ox1 Gene Increases the Tolerance to Abiotic Stress in Transgenic Potato (Solanum tuberosum L.) Plants

Shi, Jianbin; Jian, Wang; Wang, Ning; Zhou, Hong; Xu, Qinghua

doi:10.1007/s12010-018-2848-6

Cited by 19 publications

(10 citation statements)

References 40 publications

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“…For example, activation of gibberellin 2-oxidase 6 decreased active gibberellin levels and created a dominant semi-dwarf phenotype in rice (Oryza sativa L.) [ 31 ]. Overexpression of stga2ox1 gene increases the tolerance to abiotic stress in transgenic potato plants [ 32 ]. Developing xylem-preferential expression of PdGA20ox1 improves woody biomass production in a hybrid poplar [ 33 ] and the QTL GNP1 encodes GA20ox1, which increases grain number and yield by increasing cytokinin activity in rice panicle meristems [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Genome-wide analysis of gibberellin-dioxygenases gene family and their responses to GA applications in maize

Wang

et al. 2021

PLoS ONE

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Gibberellin-dioxygenases genes plays important roles in the regulating plant development. However, Gibberellin-dioxygenases genes are rarely reported in maize, especially response to gibberellin (GA). In present study, 27 Gibberellin-dioxygenases genes were identified in the maize and they were classified into seven subfamilies (I-VII) based on phylogenetic analysis. This result was also further confirmed by their gene structure and conserved motif characteristics. And gibberellin-dioxygenases genes only occurred segmental duplication that occurs most frequently in plants. Furthermore, the gibberellin-dioxygenases genes showed different tissue expression pattern in different tissues and most of the gibberellin-dioxygenases genes showed tissue specific expression. Moreover, almost all the gibberellin-dioxygenases genes were significantly elevated in response to GA except for ZmGA2ox2 and ZmGA20ox10 of 15 gibberellin-dioxygenases genes normally expressed in leaves while 10 and 11 gibberellin-dioxygenases genes showed up and down regulated under GA treatment than that under normal condition in leaf sheath. In addition, we found that ZmGA2ox1, ZmGA2ox4, ZmGA20ox7, ZmGA3ox1 and ZmGA3ox3 might be potential genes for regulating balance of GAs which play essential roles in plant development. These findings will increase our understanding of Gibberellin-dioxygenases gene family in response to GA and will provide a solid base for further functional characterization of Gibberellin-dioxygenases genes in maize.

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Section: Discussionmentioning

confidence: 99%

Genome-wide analysis of gibberellin-dioxygenases gene family and their responses to GA applications in maize

Wang

et al. 2021

PLoS ONE

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“…The GA2ox genes make plants more resistant to salt stress. GA2ox is a class of oxidase and plays a vital role in regulating the synthesis of GA [113]. Previous research demonstrated that GA2ox helps in the conversion of bioactive GAs to an inactive form [114].…”

Section: Role Of Ga and Sa Synthase Genes In Salt Stress Tolerancementioning

confidence: 99%

Pivotal Role of Phytohormones and Their Responsive Genes in Plant Growth and Their Signaling and Transduction Pathway under Salt Stress in Cotton

Ahmad

Zhu

Zhou

et al. 2022

IJMS

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The presence of phyto-hormones in plants at relatively low concentrations plays an indispensable role in regulating crop growth and yield. Salt stress is one of the major abiotic stresses limiting cotton production. It has been reported that exogenous phyto-hormones are involved in various plant defense systems against salt stress. Recently, different studies revealed the pivotal performance of hormones in regulating cotton growth and yield. However, a comprehensive understanding of these exogenous hormones, which regulate cotton growth and yield under salt stress, is lacking. In this review, we focused on new advances in elucidating the roles of exogenous hormones (gibberellin (GA) and salicylic acid (SA)) and their signaling and transduction pathways and the cross-talk between GA and SA in regulating crop growth and development under salt stress. In this review, we not only focused on the role of phyto-hormones but also identified the roles of GA and SA responsive genes to salt stress. Our aim is to provide a comprehensive review of the performance of GA and SA and their responsive genes under salt stress, assisting in the further elucidation of the mechanism that plant hormones use to regulate growth and yield under salt stress.

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“…Previous evidence suggested that GA2ox genes act as the main regulatory unit of the GA biosynthetic pathway, participating in response to biotic and abiotic stresses [20][21][22][23]. To investigate whether OsGA2ox8 is involved in the response to various abiotic stresses and hormones in rice, the expression patterns of OsGA2ox8 were analyzed using total RNA extracted from the leaves and roots of Nipponbare plants at the three-leaf stage exposed to the following treatments: Gibberellin (GA 10 µM), paclobutrazol (PAC 10 µM), abscisic acid (ABA 100 µM), indoleacetic acid (IAA 20 µM), jasmonic acid (JA 100 µM), hydrogen peroxide (H 2 O 2 20 mM), polyethylene glycol 6000 (PEG6000 20%), low temperature (4 • C), and salt (150 mM) (Figure 2A).…”

Section: Characterizing the Expression Profile Of Osga2ox8mentioning

confidence: 99%

Molecular Dissection of the Gene OsGA2ox8 Conferring Osmotic Stress Tolerance in Rice

Wang

et al. 2021

IJMS

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Gibberellin 2-oxidase (GA2ox) plays an important role in the GA catabolic pathway and the molecular function of the OsGA2ox genes in plant abiotic stress tolerance remains largely unknown. In this study, we functionally characterized the rice gibberellin 2-oxidase 8 (OsGA2ox8) gene. The OsGA2ox8 protein was localized in the nucleus, cell membrane, and cytoplasm, and was induced in response to various abiotic stresses and phytohormones. The overexpression of OsGA2ox8 significantly enhanced the osmotic stress tolerance of transgenic rice plants by increasing the number of osmotic regulators and antioxidants. OsGA2ox8 was differentially expressed in the shoots and roots to cope with osmotic stress. The plants overexpressing OsGA2ox8 showed reduced lengths of shoots and roots at the seedling stage, but no difference in plant height at the heading stage was observed, which may be due to the interaction of OsGA2ox8 and OsGA20ox1, implying a complex feedback regulation between GA biosynthesis and metabolism in rice. Importantly, OsGA2ox8 was able to indirectly regulate several genes associated with the anthocyanin and flavonoid biosynthetic pathway and the jasmonic acid (JA) and abscisic acid (ABA) biosynthetic pathway, and overexpression of OsGA2ox8 activated JA signal transduction by inhibiting the expression of jasmonate ZIM domain-containing proteins. These results provide a basis for a future understanding of the networks and respective phenotypic effects associated with OsGA2ox8.

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Overexpression of StGA2ox1 Gene Increases the Tolerance to Abiotic Stress in Transgenic Potato (Solanum tuberosum L.) Plants

Cited by 19 publications

References 40 publications

Genome-wide analysis of gibberellin-dioxygenases gene family and their responses to GA applications in maize

Genome-wide analysis of gibberellin-dioxygenases gene family and their responses to GA applications in maize

Pivotal Role of Phytohormones and Their Responsive Genes in Plant Growth and Their Signaling and Transduction Pathway under Salt Stress in Cotton

Molecular Dissection of the Gene OsGA2ox8 Conferring Osmotic Stress Tolerance in Rice

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