Similar geometric rules govern the distribution of veins and stomata in petals, sepals and leaves
Zhang, Feng-Ping1,2; Carins Murphy, Madeline R.2; Cardoso, Amanda A.2,3,4; Jordan, Gregory J.2; Brodribb, Timothy J.2
2018-09-01
发表期刊NEW PHYTOLOGIST
ISSN0028-646X
卷号219期号:4页码:1224-1234
摘要

Investment in leaf veins (supplying xylem water) is balanced by stomatal abundance, such that sufficient water transport is provided for stomata to remain open when soil water is abundant. This coordination is mediated by a common dependence of vein and stomatal densities on cell size. Flowers may not conform to this same developmental pattern if they depend on water supplied by the phloem or have high rates of nonstomatal transpiration. We examined the relationships between veins, stomata and epidermal cells in leaves, sepals and petals of 27 angiosperms to determine whether common spacing rules applied to all tissues. Regression analysis found no evidence for different relationships within organ types. Both vein and stomatal densities were strongly associated with epidermal cell size within organs, but, for a given epidermal cell size, petals had fewer veins and stomata than sepals, which had fewer than leaves. Although our data support the concept of common scaling between veins and stomata in leaves and flowers, the large diversity in petal vein density suggests that, in some species, petal veins may be engaged in additional functions, such as the supply of water for high cuticular transpiration or for phloem delivery of water or carbohydrates.

关键词Epidermal Cell Size Floral Evolution Hydraulics Stomatal Density Vein Density
DOI10.1111/nph.15210
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/61692
专题资源植物与生物技术所级重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China
2.Univ Tasmania, Sch Nat Sci, Private Bag 55, Hobart, Tas 7001, Australia
3.Univ Fed Vicosa, Dept Biol Vegetal, BR-36570000 Vicosa, MG, Brazil
4.Purdue Univ, Dept Bot & Plant Pathol, Purdue Ctr Plant Biol, W Lafayette, IN 47907 USA
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Zhang, Feng-Ping,Carins Murphy, Madeline R.,Cardoso, Amanda A.,et al. Similar geometric rules govern the distribution of veins and stomata in petals, sepals and leaves[J]. NEW PHYTOLOGIST,2018,219(4):1224-1234.
APA Zhang, Feng-Ping,Carins Murphy, Madeline R.,Cardoso, Amanda A.,Jordan, Gregory J.,&Brodribb, Timothy J..(2018).Similar geometric rules govern the distribution of veins and stomata in petals, sepals and leaves.NEW PHYTOLOGIST,219(4),1224-1234.
MLA Zhang, Feng-Ping,et al."Similar geometric rules govern the distribution of veins and stomata in petals, sepals and leaves".NEW PHYTOLOGIST 219.4(2018):1224-1234.
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