FP23015GsNAC2 gene enhances saline-alkali stress tolerance by promoting plant growth and regulating glutathione metabolism in Sorghum bicolor

Rong Wu , Lingxin Kong, Xiao Wu, Jing Gao, Tingli Niu, Jianying Li, Zhijiang Li and Lingyan Dai

pp. 677-690

The quality and yields of Sorghum bicolor plants are seriously affected by saline-alkali conditions. NAC (NAM, ATAF, and CUC) transcription factors are plant specific and have various functions in plant development and response to various stresses. It was found that GsNAC2-overexpressing plants showed higher saline-alkali tolerance in our study. These suggest that GsNAC2 acts as a potentially important regulator in response to saline-alkali stress and may be used in molecular breeding to improve crop yields under adverse environmental conditions.

FP22280Wounding induces suberin deposition, relevant gene expressions and changes of endogenous phytohormones in Chinese yam (Dioscorea opposita) tubers

Linyao Liu , Ping Geng, Xueyuan Jin, Xiaopeng Wei , Jing Xue, Xiaobo Wei , Lihua Zhang, Mengpei Liu, Liang Zhang, Wei Zong and Linchun Mao

pp. 691-700

Wounds on Chinese yam (Dioscorea opposita) tubers can ocurr during harvesting and handling, and rapid suberisation is required to prevent infection and desiccation. However, little is known about the causal relationship among suberin deposition, relevant gene expressions and endogenous phytohormones levels in response to wounding. Wound-induced abscisic acid and jasmonic acid are likely to regulate the biosynthesis, transport and polymerisation of suberin monomers by activating relevant gene expressions, which might be involved in suberisation of cells in wound area.

FP23049Metabolomic analysis reveals key metabolites and metabolic pathways in Suaeda salsa under salt and drought stress

Jinbo Bao , Zhiyou Liu, Zhijie Ding, Gulbar Yisilam, Qiuyan Wang and Xinmin Tian

pp. 701-711

This study used liquid chromatography-mass spectrometry (LC-MS) to study the changes of small molecule metabolites of Suaeda salsa under salt and drought stress. We showed the main metabolites and metabolic pathways that changed under salt and drought stress environments, and revealed the molecular responses of S. salsa in response to salt and drought from the level of metabolomics.

FP23079Ethylene-induced improvement in photosynthetic performance of Zanthoxylum armatum under reoxygenation conditions

Jiaojiao Wu , Jingyan Wang , Peiyun Wang, Chengyi Su, Wenkai Hui and Wei Gong

pp. 712-723

This study evaluated the effects of ethylene pretreatment on the photosynthetic performance and tolerance of Zanthoxylum armatum seedlings to post-waterlogging reoxygenation stress. The results showed that reoxygenation stress decreased photosynthetic pigments content and enzymes activity, gas exchange parameters and chlorophyll fluorescence. However, ethylene pretreatment increased above indicators to enhance the tolerance to reoxygenation stress. These findings suggest that ethylene could be used to mitigate the impact of continued climate change on plant growth and development.

FP23054Effects of sulfate on the photosynthetic physiology characteristics of Hydrocotyle vulgaris under zinc stress

Xiaoyan He, Shiling Liu, Xiaoqian Huang, Fangming Yu, Yi Li, Furong Li and Kehui Liu

pp. 724-735

Excessive zinc reduces the photosynthetic levels of plants. In this study, we investigated how damage caused by Zn stress may be alleviated. We found that exogenous sulfate could improve the photosynthetic levels of the ornamental plant Hydrocotyle vulgaris under Zn stressed. The results of this study provide a reference for the restoration of Zn-contaminated environments by the combining of H. vulgaris with sulfate at the photophysiological level.

FP22309Salicylic acid-functionalised chitosan nanoparticles restore impaired sucrose metabolism in the developing anther of cotton (Gossypium hirsutum) under heat stress

Khyati R. Savani, H. P. Gajera , Darshna G. Hirpara, Disha D. Savaliya and U. K. Kandoliya

pp. 736-751

Nanotechnology offers enormous potential in agriculture, including alleviating the effects of climate change and enhancing abiotic stress management. Salicylic acid-functionalised chitosan nanoparticles (SA-NCS) were synthesised and their applications illustrated slow release of SA from SA-NCS, which may effectively protect developing anthers against heat stress in cotton. The study provides new insights into SA-NCS to improve source-sink imbalance and enlighten to restore sucrose metabolism for better growth of reproductive structure under heat stress in cotton (Gossypium hirsutum L.).