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Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)

Myricaria laxiflora (Tamaricaceae) is an endangered plant that is narrowly distributed in the riparian zone of the Three Gorges, along the Yangtze River, China. Using bright-field and epifluorescence microscopy, we investigated the anatomical and histochemical features that allow this species to tol...

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Autores principales: Li, Linbao, Wu, Di, Zhen, Qiaoling, Zhang, Jun, Qiu, Liwen, Huang, Guiyun, Yang, Chaodong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: De Gruyter 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114956/
https://www.ncbi.nlm.nih.gov/pubmed/34017920
http://dx.doi.org/10.1515/biol-2021-0049
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author Li, Linbao
Wu, Di
Zhen, Qiaoling
Zhang, Jun
Qiu, Liwen
Huang, Guiyun
Yang, Chaodong
author_facet Li, Linbao
Wu, Di
Zhen, Qiaoling
Zhang, Jun
Qiu, Liwen
Huang, Guiyun
Yang, Chaodong
author_sort Li, Linbao
collection PubMed
description Myricaria laxiflora (Tamaricaceae) is an endangered plant that is narrowly distributed in the riparian zone of the Three Gorges, along the Yangtze River, China. Using bright-field and epifluorescence microscopy, we investigated the anatomical and histochemical features that allow this species to tolerate both submerged and terrestrial environments. The adventitious roots of Myr. laxiflora had an endodermis with Casparian bands and suberin lamellae; the cortex and hypodermal walls had lignified thickenings in the primary structure. In the mature roots, the secondary structure had cork. The apoplastic barriers in stems consisted of a lignified fiber ring and a cuticle at the young stage and cork at the mature stage. The leaves had two layers of palisade tissue, a hyaline epidermis, sunken stomata, and a thick, papillose cuticle. Aerenchyma presented in the roots and shoots. Several Myr. laxiflora structures, including aerenchyma, apoplastic barriers in the roots and shoots, were adapted to riparian habitats. In addition, shoots had typical xerophyte features, including small leaves, bilayer palisade tissues, sunken stomata, a thick, papillose cuticle, and a hyaline epidermis. Thus, our study identified several anatomical features that may permit Myr. laxiflora to thrive in the riparian zone of the Three Gorges, China.
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spelling pubmed-81149562021-05-19 Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae) Li, Linbao Wu, Di Zhen, Qiaoling Zhang, Jun Qiu, Liwen Huang, Guiyun Yang, Chaodong Open Life Sci Research Article Myricaria laxiflora (Tamaricaceae) is an endangered plant that is narrowly distributed in the riparian zone of the Three Gorges, along the Yangtze River, China. Using bright-field and epifluorescence microscopy, we investigated the anatomical and histochemical features that allow this species to tolerate both submerged and terrestrial environments. The adventitious roots of Myr. laxiflora had an endodermis with Casparian bands and suberin lamellae; the cortex and hypodermal walls had lignified thickenings in the primary structure. In the mature roots, the secondary structure had cork. The apoplastic barriers in stems consisted of a lignified fiber ring and a cuticle at the young stage and cork at the mature stage. The leaves had two layers of palisade tissue, a hyaline epidermis, sunken stomata, and a thick, papillose cuticle. Aerenchyma presented in the roots and shoots. Several Myr. laxiflora structures, including aerenchyma, apoplastic barriers in the roots and shoots, were adapted to riparian habitats. In addition, shoots had typical xerophyte features, including small leaves, bilayer palisade tissues, sunken stomata, a thick, papillose cuticle, and a hyaline epidermis. Thus, our study identified several anatomical features that may permit Myr. laxiflora to thrive in the riparian zone of the Three Gorges, China. De Gruyter 2021-05-10 /pmc/articles/PMC8114956/ /pubmed/34017920 http://dx.doi.org/10.1515/biol-2021-0049 Text en © 2021 Linbao Li et al., published by De Gruyter https://creativecommons.org/licenses/by/4.0/This work is licensed under the Creative Commons Attribution 4.0 International License.
spellingShingle Research Article
Li, Linbao
Wu, Di
Zhen, Qiaoling
Zhang, Jun
Qiu, Liwen
Huang, Guiyun
Yang, Chaodong
Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title_full Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title_fullStr Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title_full_unstemmed Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title_short Morphological structures and histochemistry of roots and shoots in Myricaria laxiflora (Tamaricaceae)
title_sort morphological structures and histochemistry of roots and shoots in myricaria laxiflora (tamaricaceae)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114956/
https://www.ncbi.nlm.nih.gov/pubmed/34017920
http://dx.doi.org/10.1515/biol-2021-0049
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