A 5.5-kb LTR-retrotransposon insertion inside phytochrome B gene (CsPHYB) results in long hypocotyl and early flowering in cucumber (Cucumis sativus L.)

Hu, Lan; Zhang, Miaomiao; Shang, Jingjing; Liu, Zichen; Weng, Yiqun; Yue, Hongzhong; Li, Yuhong; Chen, Peng

doi:10.1007/s00122-023-04271-8

Cited by 2 publications

(1 citation statement)

References 83 publications

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“…Five of them (Cs-MCM6, Cs-MCM2, Cs-CDC45, Cs-Dpri and Cs-CDC20) were found to be involved in the cell cycle pathway, suggesting that they may play an important role in cucumber sex determination [83]. A recent discovery has revealed the presence of an insertional LTR-RT mutation within the first exon of the CsPHYB gene, which is responsible for the long hypocotyl and early flowering phenotype observed in cucumbers [84]. CsACS1G, CsACS2, CsACS11 and CsACO2 are some of the important genes involved in the synthesis of the ethylene in cucumber [75].…”

Section: Sex Determination and Flower Morphogenesis Processesmentioning

confidence: 99%

Impact of Climate Change on Regulation of Genes Involved in Sex Determination and Fruit Production in Cucumber

Aparna

Skarzyńska

Pląder

et al. 2023

Plants

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Environmental changes, both natural and anthropogenic, mainly related to rising temperatures and water scarcity, are clearly visible around the world. Climate change is important for crop production and is a major issue for the growth and productivity of cucumbers. Processes such as sex determination, flower morphogenesis and fruit development in cucumbers are highly sensitive to various forms of stress induced by climatic changes. It is noteworthy that many factors, including genetic factors, transcription factors, phytohormones and miRNAs, are crucial in regulating these processes and are themselves affected by climate change. Changes in the expression and activity of these factors have been observed as a consequence of climatic conditions. This review focuses primarily on exploring the effects of climate change and abiotic stresses, such as increasing temperature and drought, on the processes of sex determination, reproduction, and fruit development in cucumbers at the molecular level. In addition, it highlights the existing research gaps that need to be addressed in order to improve our understanding of the complex interactions between climate change and cucumber physiology. This, in turn, may lead to strategies to mitigate the adverse effects and enhance cucumber productivity in a changing climate.

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Section: Sex Determination and Flower Morphogenesis Processesmentioning

confidence: 99%

Impact of Climate Change on Regulation of Genes Involved in Sex Determination and Fruit Production in Cucumber

Aparna

Skarzyńska

Pląder

et al. 2023

Plants

View full text Add to dashboard Cite

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Phytochrome-interacting factor PIF3 integrates phytochrome B and UV-B signaling pathways to regulate gibberellin- and auxin-dependent growth in cucumber hypocotyls

Zhao

Pan

et al. 2023

Journal of Experimental Botany

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In Arabidopsis, the photoreceptors phytochrome B- (PhyB) and UVB resistance 8- (UVR8) mediated light responses play a major role in regulating photomorphogenic hypocotyl growth, but how they crosstalk to coordinate this process is not well understood. Here we report map-based cloning and functional characterization of a UVB-insensitive, long-hypocotyl mutant, lh1, and a wild-type-like lh2 mutant in cucumber, Cucumis sativus, which encodes a defective CsPhyB and a key gibberellic acid (GA) biosynthesis enzyme CsGA20ox-2, respectively. The lh2 mutation was epistatic to lh1 and partly suppressed long-hypocotyl phenotype in the lhl1lh2 double mutant. We identified phytochrome interacting factor (PIF) CsPIF3 that played a critical role in integrating the red/far-red and UVB light responses for hypocotyl growth. We show that two modules, CsPhyB-CsPIF3-CsGA20ox-2 (GA oxidase2)-DELLA and CsPIF3-CsARF18 (auxin response factor 18) mediate CsPhyB-regulated hypocotyl elongation through GA and auxin pathways, respectively, in which CsPIF3 binds to the G-/E-box motifs in the promoters of CsGA20ox-2 and CsARF18 to regulate their expression. We also identified a new physical interaction between CsPIF3 and CsUVR8 mediating CsPhyB-dependent, UVB-induced hypocotyl growth inhibition. Our work suggests that hypocotyl growth in cucumber involves a complex interplay of multiple photoreceptor- and phytohormone-mediated signaling pathways that show both conservation with and divergence from those in Arabidopsis.

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A 5.5-kb LTR-retrotransposon insertion inside phytochrome B gene (CsPHYB) results in long hypocotyl and early flowering in cucumber (Cucumis sativus L.)

Cited by 2 publications

References 83 publications

Impact of Climate Change on Regulation of Genes Involved in Sex Determination and Fruit Production in Cucumber

Impact of Climate Change on Regulation of Genes Involved in Sex Determination and Fruit Production in Cucumber

Phytochrome-interacting factor PIF3 integrates phytochrome B and UV-B signaling pathways to regulate gibberellin- and auxin-dependent growth in cucumber hypocotyls

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