Ecological Stoichiometry of Common Parasitic Plants and the Relationship with Their Hosts in Xishuangbanna, Yunnan

doi:10.3969/j.issn.1009-7791.2020.04.005

Subtropical Plant Science ›› 2020, Vol. 49 ›› Issue (04): 270-278.DOI: 10.3969/j.issn.1009-7791.2020.04.005

• Plant ecology, resources and taxonomy • Previous Articles Next Articles

Ecological Stoichiometry of Common Parasitic Plants and the Relationship with Their Hosts in Xishuangbanna, Yunnan

MEN Shi-zheng^1,2, LIU Wen-yao^1*, MO Yu-xuan^1,2, ZHANG Ting-ting^1,2, FAN Xiao-yang^1,2

(1.CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan China; 2.University of Chinese Academy of Sciences, Beijing 100049, China)

Received:2020-04-12 Revised:2020-07-21 Online:2020-08-30 Published:2020-08-30
Contact: LIU Wen-yao

云南西双版纳常见寄生植物生态化学计量特征及其与寄主的关系

门世争^1,2，刘文耀^1*，莫雨轩^1,2，张婷婷^1,2，范晓阳^1,2

(1.中国科学院西双版纳热带植物园热带森林生态学重点实验室，云南勐腊 666303；2.中国科学院大学, 北京 100049)

通讯作者: 刘文耀
基金资助:
国家自然科学基金项目(31770496、41471050)；中国科学院生物多样性保护策略项目(ZSSD-016)；中国科学院“135”项目(2017XTBG-T01)

Abstract

Abstract: In order to explore the ecological stoichiometric characteristics and homeostasis of common parasitic plants in tropical Yunnan, two dominant hemiparasitic species Scurrula chingii var. yunnanensis, Dendrophthoe pentandra and one dominant holoparasitic plant Cuscuta japonica and their hosts were selected in tropical area of Xishuangbanna, Yunnan. The results showed that the leaves of two hemiparasitic plants had lower C, N contents and N:P ration but higher P content compared with common terrestrial plants; holoparasitic plant C. japonica had higher N and P contents, but lower N:P. The C:N, C:P ratios of the two hemiparasitic plants were significantly higher than those of holoparasitic plant C. japonica. There was not significant seasonal variation in stoichiometry of C, N and P of the hemiparasitic and holoparasitic plants. Compared with the holoparasitic plants, the hemiparasitic plants had a stronger correlation with their hosts. The homeostasis indexes of C, N, P stoichiometry of holoparasitic plant C. japonica were significantly higher than those of two hemiparasitic plants. The homeostasis indexes of the holoparasitic plant C. japonica in the rainy season were significantly higher than those in the dry season.

Key words: hemiparasitic plant, holoparasitic plant, ecological stoichiometry, homeostasis, Xishuangbanna

摘要： 对云南西双版纳地区常见的半寄生植物澜沧江寄生(Scurrula chingii var. yunnanensis)、五蕊寄生(Dendrophthoe pentandra)和全寄生植物优势种金灯藤(Cuscuta japonica)的生态化学计量特征及其与寄主关系进行研究。结果表明，相较于普通高等陆生植物，两种半寄生植物叶片的C、N含量及N:P较低，P含量较高，全寄生植物金灯藤的N、P含量较高，N:P较低；两种半寄生植物C:N、C:P均显著高于全寄生植物金灯藤。两类寄生植物C、N、P生态化学计量特征季节差异不显著。相较于全寄生植物，半寄生植物与寄主间具有更强的相关性。全寄生植物金灯藤的化学计量内稳性指数显著高于两种半寄生植物，全寄生植物内稳性雨季显著高于旱季。

关键词: 半寄生植物, 全寄生植物, 生态化学计量, 内稳性特征, 西双版纳

CLC Number:

Q948.9

MEN Shi-zheng, LIU Wen-yao, MO Yu-xuan, ZHANG Ting-ting, FAN Xiao-yang . Ecological Stoichiometry of Common Parasitic Plants and the Relationship with Their Hosts in Xishuangbanna, Yunnan[J]. Subtropical Plant Science, 2020, 49(04): 270-278.

门世争，刘文耀，莫雨轩，张婷婷，范晓阳 . 云南西双版纳常见寄生植物生态化学计量特征及其与寄主的关系[J]. 亚热带植物科学, 2020, 49(04): 270-278.

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Ecological Stoichiometry of Common Parasitic Plants and the Relationship with Their Hosts in Xishuangbanna, Yunnan

云南西双版纳常见寄生植物生态化学计量特征及其与寄主的关系

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