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Physiological and Gene Expression Changes of Clematis crassifolia and Clematis cadmia in Response to Heat Stress.


ABSTRACT: Clematis is a superior perennial ornamental vine known for varied colors and shapes of its flowers. Clematis crassifolia is sensitive to high temperature, whereas Clematis cadmia has a certain temperature adaptability. Here we analyzed the potential regulatory mechanisms of C. crassifolia and C. cadmia in response to heat stress by studying the photosynthesis, antioxidant parameters, amino acids, and gene expression patterns under three temperature treatments. Heat stress caused the fading of leaves; decreased net photosynthetic rate, stomatal conductance, superoxide dismutase, and catalase activity; increased 13 kinds of amino acids content; and up-regulated the expression of seven genes, including C194329_G3, C194434_G1, and C188817_g1, etc., in C. crassifolia plants. Under the treatments of heat stress, the leaf tips of C. cadmia were wilted, and the net photosynthetic rate and soluble protein content decreased, with the increase of 12 amino acids content and the expression of c194329_g3, c194434_g1, and c195983_g1. Our results showed that C. crassifolia and C. cadmia had different physiological and molecular response mechanisms to heat stress during the ecological adaptation.

SUBMITTER: Hu Q 

PROVIDER: S-EPMC8034387 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Physiological and Gene Expression Changes of <i>Clematis crassifolia</i> and <i>Clematis cadmia</i> in Response to Heat Stress.

Hu Qingdi Q   Qian Renjuan R   Zhang Yanjun Y   Zhang Xule X   Ma Xiaohua X   Zheng Jian J  

Frontiers in plant science 20210326


<i>Clematis</i> is a superior perennial ornamental vine known for varied colors and shapes of its flowers. <i>Clematis crassifolia</i> is sensitive to high temperature, whereas <i>Clematis cadmia</i> has a certain temperature adaptability. Here we analyzed the potential regulatory mechanisms of <i>C. crassifolia</i> and <i>C. cadmia</i> in response to heat stress by studying the photosynthesis, antioxidant parameters, amino acids, and gene expression patterns under three temperature treatments.  ...[more]

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