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991.
Effects of Melatonin on Growth,Physiology and Gene Expression in Rice Seedlings Under Cadmium Stress
Xiachen Lv Yunxia Fang Lantian Zhang Weiyi Zhang Ling Xu Jingjin Han Bailing Jin Xian Zhang Xiaoqin Zhang Dawei Xue 《Phyton》2019,88(2):91-100
Melatonin (MLT) is a hormonal substance found in many organisms and can improve plant stress resistance. In this study, the japonica rice variety Y32 and indica rice variety NJ6 were cultivated in hydroponics under different concentrations of CdCl2 at the two-leaf stage. The growth, physiological and biochemical responses of the seedlings and the expression of cadmium (Cd)-related genes under exogenous melatonin (MLT) treatment were assessed. The results indicated that Cd stress destroyed the dynamic balance between reactive oxygen species (ROS) production and removal, resulting in ROS accumulation, membrane lipid peroxidation, and impaired growth and development. Following the application of exogenous MLT to rice seedlings, increases in plant biomass including both underground and above-ground areas were observed. MLT also scavenged the inhibition of superoxide dismutase (SOD) and peroxidase (POD) in a concentration dependent manner in response to Cd stress. Catalase (CAT) activity and malondialdehyde (MDA) expression also decreased following MLT treatment. Amongst the six Cd-related genes assessed, five genes were down-regulated and one was up-regulated in response to MLT treatment. Taken together, these data demonstrate that MLT improves the resilience of rice seedlings at the biochemical, physiological, and molecular levels, and diminishes the damage caused by Cd stress. 相似文献
992.
Han Chao Ren Jinghua Williams Paul N. Ke Fan Shen Qiushi Wang Zhaode Xu Di Luo Jun 《Plant and Soil》2019,441(1-2):613-627
Plant and Soil - Radial oxygen loss (ROL) for macrophytes is intimately involved in their survival and growth, thus detailed characterizations of ROL and its implication for geochemical processes... 相似文献
993.
Paecilomyces variotii extracts (ZNC) enhance plant immunity and promote plant growth 总被引:1,自引:0,他引:1
Lu Chongchong Liu Haifeng Jiang Depeng Wang Lulu Jiang Yanke Tang Shuya Hou Xuwen Han Xinyi Liu Zhiguang Zhang Min Chu Zhaohui Ding Xinhua 《Plant and Soil》2019,445(1-2):383-396
Plant and Soil - There are growing concerns regarding the restoration of karst rocky desertification (KRD) areas. However, the soil conditions and its residing microorganisms, which are essential... 相似文献
994.
Syringa pinnatifolia is an endangered endemic species in China with important ornamental and medicinal value, and it needs urgent protection. Here, we report the complete chloroplast (cp) genome structure of S. pinnatifolia and its evolution is inferred through comparative studies with related species. The S. pinnatifolia cp genome was 155 326 bp and contained a large single copy region (LSC) of 86 167 bp and a small single copy region (SSC) of 17 775 bp, as well as a pair of inverted repeat regions (IRs) of 25 692 bp. A total of 113 unique genes were annotated, including 79 protein‐coding genes, 30 tRNA genes and four rRNA genes. The GC content of the S. pinnatifolia cp genome was 37.9%, and the corresponding values in the LSC, SSC and IR regions were 36.0, 32.1, 43.2% respectively. Repetitive sequences analysis revealed that the S. pinnatifolia cp genome contained 38 repeats. Microsatellite marker detection analysis identified 253 simple sequence repeats (SSRs), which provides opportunities for future studies of the population genetics and phylogenetic relationships of Syringa. Phylogenetic analysis of 29 selected cp genomes revealed that S. pinnatifolia is closely related to Syringa vulgaris and all 27 Lamiales species formed a clade separate from the two outgroup species. This newly characterized S. pinnatifolia chloroplast genome will provide a useful genomic resource of phylogenetic inference and the development of more genetic markers for species discrimination and population studies in the genus Syringa. 相似文献
995.
996.
Yi Feng Jing Liu Longmei Zhai Zengyu Gan Guifen Zhang Shuhua Yang Yi Wang Ting Wu Xinzhong Zhang Xuefeng Xu Zhenhai Han 《Plant, cell & environment》2019,42(2):424-436
Plants experiencing salt‐induced stress often reduce cytokinin levels during the early phases of stress‐response. Interestingly, we found that the cytokinin content in the apple rootstock “robusta” was maintained at a high level under salt stress. Through screening genes involved in cytokinin biosynthesis and catabolism, we found that the high expression levels of IPT5b in robusta roots were involved in maintaining the high cytokinin content. We identified a 42 bp deletion in the promoter region of IPT5b, which elevated IPT5b expression levels, and this deletion was linked to salt tolerance in robusta×M.9 segregating population. The 42 bp deletion resulted in the deletion of a Proline Response Element (ProRE), and our results suggest that ProRE negatively regulates IPT5b expression in response to proline. Under salt stress, the robusta cultivar maintains high cytokinin levels as IPT5b expression cannot be inhibited by proline due to the deletion of ProRE, leading to improve salt tolerance. 相似文献
997.
998.
Han Feng Liu Liping Lu Jiaxi Chai Yingjuan Zhang Jie Wang Shijin Sun Licui Wang Qin Liu Yiqun He Mengjie Mu Weipeng Huang Zhenwu 《Biological trace element research》2019,188(2):363-372
Biological Trace Element Research - The required selenium intake for optimal health in Chinese residents was published in 2014. However, the adequate intake (AI) value for Chinese infants... 相似文献
999.
Zhou Yang Fu Yu Bai Zhendong Li Peixin Zhao Bo Han Yuehua Xu Ting Zhang Ningyan Lin Lin Cheng Jian Zhang Jun Zhang Jing 《Biological trace element research》2019,187(1):172-180
Biological Trace Element Research - The purpose of this study was to evaluate the protective effect of Du-Zhong cortex extract (DZCE) on lead acetate-induced bone loss in rats. Forty female... 相似文献