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不同发育阶段叶片功能性状的差异

Differences in the Functional Traits of Leaves in Different Developmental Stages.

作者信息

Zhai Juntuan, Zhang Xiao, Li Zhijun, Han Xiaoli, Zhang Shanhe

机构信息

Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin of Xinjiang Production & Construction Corps, College of Life Science and Technology, Tarim University, Alar 843300, China.

出版信息

Plants (Basel). 2023 Jun 9;12(12):2262. doi: 10.3390/plants12122262.

DOI:10.3390/plants12122262
PMID:37375887
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10304746/
Abstract

Schrenk has the biological characteristics of heteromorphic leaves and is a pioneer species for wind prevention and sand fixation. The functions of heteromorphic leaves at different developmental stages and canopy heights of are unclear. To clarify how developmental stages and canopy height affect the functional characteristics of leaves, this study evaluated the morphological anatomical structures and the physiological indicators of leaves at 2, 4, 6, 8, 10, and 12 m. The relationships of functional traits to the developmental stages and canopy heights of leaves were also analyzed. The results showed that blade length (BL), blade width (BW), leaf area (LA), leaf dry weight (LDW), leaf thickness (LT), palisade tissue thickness (PT), net photosynthetic rate (Pn), stomatal conductance (Gs), proline (Pro), and malondialdehyde (MDA) content increased with progressing developmental stages. BL, BW, LA, leaf dry weight, LT, PT, Pn, Gs, Pro, and the contents of MDA, indoleacetic acid, and zeatin riboside had significant positive correlations with canopy heights of leaves and their developmental stages. The morphological structures and physiological characteristics of leaves showed more evident xeric structural characteristics and higher photosynthetic capacity with increasing canopy height and progressive developmental stages. Resource utilization efficiency and the defense ability against environmental stresses were improved through mutual regulation of each functional trait.

摘要

沙冬青具有异形叶的生物学特性，是防风固沙的先锋物种。异形叶在不同发育阶段和冠层高度下的功能尚不清楚。为了阐明发育阶段和冠层高度如何影响叶片的功能特性，本研究对2米、4米、6米、8米、10米和12米处叶片的形态解剖结构和生理指标进行了评估。还分析了功能性状与叶片发育阶段和冠层高度之间的关系。结果表明，叶片长度（BL）、叶片宽度（BW）、叶面积（LA）、叶干重（LDW）、叶厚度（LT）、栅栏组织厚度（PT）、净光合速率（Pn）、气孔导度（Gs）、脯氨酸（Pro）和丙二醛（MDA）含量随着发育阶段的推进而增加。BL、BW、LA、叶干重、LT、PT、Pn、Gs、Pro以及MDA、吲哚乙酸和玉米素核苷的含量与叶片冠层高度及其发育阶段呈显著正相关。随着冠层高度的增加和发育阶段的推进，沙冬青叶片的形态结构和生理特征呈现出更明显的旱生结构特征和更高的光合能力。通过各功能性状的相互调节，提高了资源利用效率和对环境胁迫的防御能力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/48a16b6511ad/plants-12-02262-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c3fda4d72d2f/plants-12-02262-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/794bbd778ce0/plants-12-02262-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/f5ba4aeb5bc7/plants-12-02262-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/b7ed444ddf38/plants-12-02262-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/82eea7880fbd/plants-12-02262-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/fcd9b6c405ec/plants-12-02262-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c8576856f1ea/plants-12-02262-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c94360bffadb/plants-12-02262-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/1977a52fd2c6/plants-12-02262-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/48a16b6511ad/plants-12-02262-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c3fda4d72d2f/plants-12-02262-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/794bbd778ce0/plants-12-02262-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/f5ba4aeb5bc7/plants-12-02262-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/b7ed444ddf38/plants-12-02262-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/82eea7880fbd/plants-12-02262-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/fcd9b6c405ec/plants-12-02262-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c8576856f1ea/plants-12-02262-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/c94360bffadb/plants-12-02262-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/1977a52fd2c6/plants-12-02262-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fa59/10304746/48a16b6511ad/plants-12-02262-g010.jpg

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Plant Biol (Stuttg). 2020 May;22(3):366-375. doi: 10.1111/plb.13078. Epub 2020 Jan 5.
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Can trait patterns along gradients predict plant community responses to climate change?特征模式能否沿梯度预测植物群落对气候变化的响应？
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Leaf anatomy mediates coordination of leaf hydraulic conductance and mesophyll conductance to CO in Oryza.
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