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Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem

Cadmium is one of the most toxic heavy metals and can be easily absorbed by plants, affecting root growth. Root border cells (RBCs), that are located in the periphery of the root cap and originate from the root cap meristem, represent a convenient tool to study the toxic effects of Cd on root perfor...

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Autores principales: Feng, Yingming, Li, Huanxiu, Zhang, Xianshi, Li, Xuewen, Zhang, Jie, Shi, Lei, Chen, Xingyun, Nong, Wei, Wang, Changquan, Shabala, Sergey, Yu, Min
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9504243/
https://www.ncbi.nlm.nih.gov/pubmed/36143437
http://dx.doi.org/10.3390/life12091401
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author Feng, Yingming
Li, Huanxiu
Zhang, Xianshi
Li, Xuewen
Zhang, Jie
Shi, Lei
Chen, Xingyun
Nong, Wei
Wang, Changquan
Shabala, Sergey
Yu, Min
author_facet Feng, Yingming
Li, Huanxiu
Zhang, Xianshi
Li, Xuewen
Zhang, Jie
Shi, Lei
Chen, Xingyun
Nong, Wei
Wang, Changquan
Shabala, Sergey
Yu, Min
author_sort Feng, Yingming
collection PubMed
description Cadmium is one of the most toxic heavy metals and can be easily absorbed by plants, affecting root growth. Root border cells (RBCs), that are located in the periphery of the root cap and originate from the root cap meristem, represent a convenient tool to study the toxic effects of Cd on root performance. In this work, vegetables with contrasting types of root apical meristem (RAM) organizations were used. The open RAM organizations included pea and cucumber, and the closed RAM organizations included tomato, chili, and eggplant. The number of RBCs were significantly higher in the species possessing open RAM organization: pea (11,330 cells per root) > cucumber (8200) > tomato (2480) > eggplant (1830) > chili (1320). The same trend was observed for cell viability: pea (61%) > cucumber (59%) > tomato (49%) > eggplant (44%) > chili (42%). Pea and cucumber had higher relative radicle elongation rates and a lower increase in stress-induced accumulation of malondialdehyde (MDA), making them more resistant to Cd stress than the vegetables with close RAM organization. Under Cd treatment, the number and viability of RBCs in vegetables with both types of RAM organization were significantly decreased. However, the decreasing ratio of the number and viability of RBCs in pea and cucumber was higher than in tomato, chili, and eggplant. Taken together, the plants with the open-type RAM are more tolerant to Cd, and it can be speculated that the cadmium tolerance of the vegetables may be correlated with the number and viability of RBCs in response to cadmium stress.
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spelling pubmed-95042432022-09-24 Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem Feng, Yingming Li, Huanxiu Zhang, Xianshi Li, Xuewen Zhang, Jie Shi, Lei Chen, Xingyun Nong, Wei Wang, Changquan Shabala, Sergey Yu, Min Life (Basel) Article Cadmium is one of the most toxic heavy metals and can be easily absorbed by plants, affecting root growth. Root border cells (RBCs), that are located in the periphery of the root cap and originate from the root cap meristem, represent a convenient tool to study the toxic effects of Cd on root performance. In this work, vegetables with contrasting types of root apical meristem (RAM) organizations were used. The open RAM organizations included pea and cucumber, and the closed RAM organizations included tomato, chili, and eggplant. The number of RBCs were significantly higher in the species possessing open RAM organization: pea (11,330 cells per root) > cucumber (8200) > tomato (2480) > eggplant (1830) > chili (1320). The same trend was observed for cell viability: pea (61%) > cucumber (59%) > tomato (49%) > eggplant (44%) > chili (42%). Pea and cucumber had higher relative radicle elongation rates and a lower increase in stress-induced accumulation of malondialdehyde (MDA), making them more resistant to Cd stress than the vegetables with close RAM organization. Under Cd treatment, the number and viability of RBCs in vegetables with both types of RAM organization were significantly decreased. However, the decreasing ratio of the number and viability of RBCs in pea and cucumber was higher than in tomato, chili, and eggplant. Taken together, the plants with the open-type RAM are more tolerant to Cd, and it can be speculated that the cadmium tolerance of the vegetables may be correlated with the number and viability of RBCs in response to cadmium stress. MDPI 2022-09-09 /pmc/articles/PMC9504243/ /pubmed/36143437 http://dx.doi.org/10.3390/life12091401 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Feng, Yingming
Li, Huanxiu
Zhang, Xianshi
Li, Xuewen
Zhang, Jie
Shi, Lei
Chen, Xingyun
Nong, Wei
Wang, Changquan
Shabala, Sergey
Yu, Min
Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title_full Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title_fullStr Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title_full_unstemmed Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title_short Effects of Cadmium Stress on Root and Root Border Cells of Some Vegetable Species with Different Types of Root Meristem
title_sort effects of cadmium stress on root and root border cells of some vegetable species with different types of root meristem
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9504243/
https://www.ncbi.nlm.nih.gov/pubmed/36143437
http://dx.doi.org/10.3390/life12091401
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