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Anatomical structures of alligator weed (Alternanthera philoxeroides) suggest it is well adapted to the aquatic-terrestrial transition zone

文献类型：期刊论文

作者Yang, Chaodong1; Yang, Xiaolin1; Zhang, Xia1; Zhou, Cunyu1; Zhang, Fan1; Wang, Xiao'e1; Wang, Qingfeng2
刊名FLORA
出版日期2019-04-01
卷号253页码:27-34
关键词Invasive plant Apoplastic barrier Histochemistry Permeability Supernumerary cambia Air spaces
ISSN号0367-2530
DOI10.1016/j.flora.2019.02.013
英文摘要The successful invasion of alligator weed (Alternanthera philoxeroides) into both aquatic and dry terrestrial environments has been attributed to its phenotypic plasticity and high rates of growth and vegetative propagation. Here, we evaluated whether the anatomical structures of alligator weed make it well adapted to colonize the aquatic-terrestrial transition zone. Anatomical and histochemical analysis revealed an impermeable apoplastic barrier that consists of a cuticle and an endodermis of the adventitious root and stem in both aquatic and terrestrial environment; stem and root possess a periderm in the terrestrial environment; and the root has a lignified cortex and hypodermic in the aquatic environment. A supernumerary cambia produces secondary vascular bundles, parenchyma and adventitious buds. Dilated parenchyma cells exist in the aged terrestrial roots. Aerenchyma tissue and pith cavities in the roots and stems produce air spaces, and the aquatic roots possess large aerenchyma compared with intercellular aerenchyma of terrestrial roots. In summary, phenotypic plasticity of anatomical characters, such as impermeable apoplastic barriers, air spaces, and reproductive supernumerary cambia, may be evidence that alligator weed is well adapted to the aquatic-terrestrial transition zone.
资助项目Engineering Research Center of Ecology and Agriculture Use of Wetland, Ministry of Education opening fund ; Yangtze University[KF201603] ; Key Laboratory of Aquatic Botany and Watershed Ecology opening fund (2017) ; Wuhan Botanical Garden ; Chinese Academy of Sciences
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000463559200004
出版者ELSEVIER GMBH
源URL[http://202.127.146.157/handle/2RYDP1HH/7194]  
专题中国科学院武汉植物园
通讯作者Wang, Qingfeng
作者单位1.Yangtze Univ, Engn Res Ctr Ecol & Agr Use Wetland, Minist Educ, Jingzhou 434025, Hubei, Peoples R China
2.Chinese Acad Sci, Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Chaodong,Yang, Xiaolin,Zhang, Xia,et al. Anatomical structures of alligator weed (Alternanthera philoxeroides) suggest it is well adapted to the aquatic-terrestrial transition zone[J]. FLORA,2019,253:27-34.
APA Yang, Chaodong.,Yang, Xiaolin.,Zhang, Xia.,Zhou, Cunyu.,Zhang, Fan.,...&Wang, Qingfeng.(2019).Anatomical structures of alligator weed (Alternanthera philoxeroides) suggest it is well adapted to the aquatic-terrestrial transition zone.FLORA,253,27-34.
MLA Yang, Chaodong,et al."Anatomical structures of alligator weed (Alternanthera philoxeroides) suggest it is well adapted to the aquatic-terrestrial transition zone".FLORA 253(2019):27-34.

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来源：武汉植物园

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