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Zhen-Hui Gong
College of Horticulture, Northwest A&F University, Yangling, Xianyang 712100, China

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Journal article
Published: 28 June 2021 in International Journal of Molecular Sciences
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Harsh environmental factors have continuous negative effects on plant growth and development, leading to metabolic disruption and reduced plant productivity and quality. However, filamentation temperature-sensitive H protease (FtsH) plays a prominent role in helping plants to cope with these negative impacts. In the current study, we examined the transcriptional regulation of the CaFtsH06 gene in the R9 thermo-tolerant pepper (Capsicum annuum L.) line. The results of qRT-PCR revealed that CaFtsH06 expression was rapidly induced by abiotic stress treatments, including heat, salt, and drought. The CaFtsH06 protein was localized to the mitochondria and cell membrane. Additionally, silencing CaFtsH06 increased the accumulation of malonaldehyde content, conductivity, hydrogen peroxide (H2O2) content, and the activity levels of superoxide dismutase and superoxide (·O2), while total chlorophyll content decreased under these abiotic stresses. Furthermore, CaFtsH06 ectopic expression enhanced tolerance to heat, salt, and drought stresses, thus decreasing malondialdehyde, proline, H2O2, and ·O2 contents while superoxide dismutase activity and total chlorophyll content were increased in transgenic Arabidopsis. Similarly, the expression levels of other defense-related genes were much higher in the transgenic ectopic expression lines than WT plants. These results suggest that CaFtsH06 confers abiotic stress tolerance in peppers by interfering with the physiological indices through reducing the accumulation of reactive oxygen species, inducing the activities of stress-related enzymes and regulating the transcription of defense-related genes, among other mechanisms. The results of this study suggest that CaFtsH06 plays a very crucial role in the defense mechanisms of pepper plants to unfavorable environmental conditions and its regulatory network with other CaFtsH genes should be examined across variable environments.

ACS Style

Jing-Jing Xiao; Rui-Xing Zhang; Abid Khan; Saeed Ul Haq; Wen-Xian Gai; Zhen-Hui Gong. CaFtsH06, A Novel Filamentous Thermosensitive Protease Gene, Is Involved in Heat, Salt, and Drought Stress Tolerance of Pepper (Capsicum annuum L.). International Journal of Molecular Sciences 2021, 22, 6953 .

AMA Style

Jing-Jing Xiao, Rui-Xing Zhang, Abid Khan, Saeed Ul Haq, Wen-Xian Gai, Zhen-Hui Gong. CaFtsH06, A Novel Filamentous Thermosensitive Protease Gene, Is Involved in Heat, Salt, and Drought Stress Tolerance of Pepper (Capsicum annuum L.). International Journal of Molecular Sciences. 2021; 22 (13):6953.

Chicago/Turabian Style

Jing-Jing Xiao; Rui-Xing Zhang; Abid Khan; Saeed Ul Haq; Wen-Xian Gai; Zhen-Hui Gong. 2021. "CaFtsH06, A Novel Filamentous Thermosensitive Protease Gene, Is Involved in Heat, Salt, and Drought Stress Tolerance of Pepper (Capsicum annuum L.)." International Journal of Molecular Sciences 22, no. 13: 6953.

Journal article
Published: 04 June 2020 in Scientia Horticulturae
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Anthocyanin as secondary metabolites exits wildly in the plant kingdom, and its accumulation is regulated by transcription factors. However, little is known about role of CaMYB in fruit color of pepper. In this study, a purple-fruited pepper (Capsicum annuum L.) was selected and observed at 8 different stages (Z1−1–Z1−8) during fruit ripening (18, 23, 30, 35, 40, 45, 50, and 55 days after flowering). The results showed that higher accumulation of anthocyanin content was observed at 3 different stages (Z1−1– Z1−3) of fruit ripening and decreased in the following stage during fruit ripening, which primarily reflected in change of fruit color (from purple to yellow, and then to red). Expression of genes, especially CaMYB, in the biosynthetic pathway of anthocyanin was responsible for fruit color at 3 different stages (Z1−1– Z1−3) of fruit ripening. Further analysis showed that silencing of CaMYB resulted in poor accumulation of anthocyanin, suggesting the positive role of CaMYB in the metabolism of anthocyanin in pepper fruit. Our study will provide a basic insight for anthocyanin synthesis in fruit color formation.

ACS Style

Rui-Xing Zhang; Guo-Xin Cheng; Gui-Ting Liu; Si-Yu Chen; Saeed Ul Haq; Abid Khan; Quan-Hui Li; Zhen-Hui Gong. Assessing the functional role of color-related CaMYB gene under cold stress using virus-induced gene silencing in the fruit of pepper (Capsicum annuum L.). Scientia Horticulturae 2020, 272, 109504 .

AMA Style

Rui-Xing Zhang, Guo-Xin Cheng, Gui-Ting Liu, Si-Yu Chen, Saeed Ul Haq, Abid Khan, Quan-Hui Li, Zhen-Hui Gong. Assessing the functional role of color-related CaMYB gene under cold stress using virus-induced gene silencing in the fruit of pepper (Capsicum annuum L.). Scientia Horticulturae. 2020; 272 ():109504.

Chicago/Turabian Style

Rui-Xing Zhang; Guo-Xin Cheng; Gui-Ting Liu; Si-Yu Chen; Saeed Ul Haq; Abid Khan; Quan-Hui Li; Zhen-Hui Gong. 2020. "Assessing the functional role of color-related CaMYB gene under cold stress using virus-induced gene silencing in the fruit of pepper (Capsicum annuum L.)." Scientia Horticulturae 272, no. : 109504.