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首页> 外文期刊>Journal of Experimental Botany >Spatio-temporal expression of miRNA159 family members and their GAMYB target gene during the modulation of gibberellin-induced grapevine parthenocarpy
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Spatio-temporal expression of miRNA159 family members and their GAMYB target gene during the modulation of gibberellin-induced grapevine parthenocarpy

机译:胃肠杆菌素诱导的葡萄孢鼠甘蓝型治疗期间MiRNA159家族成员及其GamyB靶基因的时代表达

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摘要

Grapevine, Vitis vinifera, is an important economic fruit crop that is highly sensitive to gibberellin (GA), and the exogenous application of GA can efficiently induce grapevine parthenocarpy. However, the molecular mechanisms underlying this process remain elusive. In this study, morphological changes during flower development in response to GA treatments were examined in the 'Zuijinxiang' cultivar. To obtain insights into the roles of miRNA159s in GA-induced grapevine parthenocarpy, VvmiR159a, VvmiR159b, VvmiR159c, and their target gene VvGAMYB were isolated, sequenced and characterized. Spatial-temporal expression analyses showed that VvmiR159c exhibited the highest expression levels at 4 d before flowering, followed by a gradual decrease, while VvGAMYB displayed an opposite pattern of expression with the lowest expression at the corresponding stage in response to GA treatment. A cleavage interaction between VvmiR159s and VvGAMYB and variations of their cleavage roles were confirmed in grapevine floral development. In addition, the potential roles of VvmiR159s in GA signaling were investigated through DELLA-protein repressors, indicating that GA-DELLA (SLR1)-VvmiR159c-VvGAMYB is the key signaling regulatory module in grapevine. Our findings provide novel insights into the GA-responsive roles of VvmiR159s in modulating grapevine floral development, which have important implications for the molecular breeding of high-quality seedless grapevine berry.
机译:葡萄树,血管血管,是对嗜菌(GA)高度敏感的重要经济果实,以及GA的外源性应用可以有效地诱导葡萄葡萄孢菌。然而,这个过程的基本分子机制仍然难以捉摸。在这项研究中,在“Zuijinxiang”的品种中,研究了对GA治疗的响应GA治疗期间的形态变化。为了在GA诱导的葡萄葡萄孢菌,VVMIR159A,VVMIR159B,VVMIR159C及其靶基因VVGGAMYB中获取miRNA159s的角色的见解,分离,测序和表征。空间 - 时间表达分析表明,VVMIR159C在开花之前表现出最高的表达水平,然后逐渐减少,而VVGAMYB响应于GA治疗响应于相应阶段的最低表达而显示出相反的表达模式。在葡萄花卉发育中证实了VVMIR159S和VVGAMYB之间的裂解相互作用以及它们的切割作用的变化。此外,通过Della-incote-incal抑制器研究了VVMIR159S在GA信号传导中的潜在作用,表明Ga-della(SLR1)-VVMIR159C-VVVMYB是葡萄树中的关键信号调节模块。我们的调查结果为VVMIR159S在调节葡萄花开发方面的GA-Chencollyive作用方面提供了新的见解,这对高质量无籽葡萄浆果的分子育种具有重要意义。

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