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Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats

The essence of plant ecological stoichiometry is to study the relationships between species and their environment, including nutrient absorption, utilization and cycling processes as well as the nutrient limitation of plants. Plants can regulate nutrient elements and adapt to environmental changes....

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Autores principales: Dong, Xue, Zhang, Jinbo, Xin, Zhiming, Huang, Yaru, Han, Chunxia, Li, Yonghua, Lu, Qi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863615/
https://www.ncbi.nlm.nih.gov/pubmed/36679127
http://dx.doi.org/10.3390/plants12020414
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author Dong, Xue
Zhang, Jinbo
Xin, Zhiming
Huang, Yaru
Han, Chunxia
Li, Yonghua
Lu, Qi
author_facet Dong, Xue
Zhang, Jinbo
Xin, Zhiming
Huang, Yaru
Han, Chunxia
Li, Yonghua
Lu, Qi
author_sort Dong, Xue
collection PubMed
description The essence of plant ecological stoichiometry is to study the relationships between species and their environment, including nutrient absorption, utilization and cycling processes as well as the nutrient limitation of plants. Plants can regulate nutrient elements and adapt to environmental changes. To understand the adaptation mechanism, it is important to take plants as a whole and quantify the correlation between the chemometrics of different organs. Ammopiptanthus mongolicus is within the second-class group of rare–endangered plants in China and is the only evergreen broad-leaved shrub in desert areas. We analyzed the ecological stoichiometric characteristics of leaves, stems, roots, flowers and seeds of A. mongolicus in five habitats, namely fixed sandy land, semi-fixed sandy land, stony–sandy land, alluvial gravel slope and saline–alkali land. We found that (1) the nutrient contents of N, P and K were in the order of seed > flower > leaf > root > stem. The enrichment of the N, P and K in the reproductive organs promoted the transition from vegetative growth to reproductive growth. Additionally, (2) the contents of C, N, P and K and their stoichiometric ratios in different organs varied among different habitat types. The storage capacity of C, N and P was higher in sandy soil (fixed and semi-fixed sandy land), whereas the content of K was higher in gravelly soil (stony–sandy land and alluvial gravel slope), and the C:N, C:P and N:P were significantly higher in gravelly soil than those in sandy soil. A. mongolicus had higher nutrient use efficiency in stony–sandy land and alluvial gravel slope. Furthermore, (3) the C:N and N:P ratios in each organ were relatively stable among different habitats, whereas the K:P ratio varied greatly. The N:P ratios of leaves were all greater than 16 in different habitats, indicating that the growth was mainly limited by P. Moreover, (4) except for the P element, the content of each element and its stoichiometric ratio were affected by the interaction between organs and habitat. Habitat had a greater impact on C content, whereas organs had a greater influence on N, P and K content and C:N, C:P, C:K and N:P.
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spelling pubmed-98636152023-01-22 Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats Dong, Xue Zhang, Jinbo Xin, Zhiming Huang, Yaru Han, Chunxia Li, Yonghua Lu, Qi Plants (Basel) Article The essence of plant ecological stoichiometry is to study the relationships between species and their environment, including nutrient absorption, utilization and cycling processes as well as the nutrient limitation of plants. Plants can regulate nutrient elements and adapt to environmental changes. To understand the adaptation mechanism, it is important to take plants as a whole and quantify the correlation between the chemometrics of different organs. Ammopiptanthus mongolicus is within the second-class group of rare–endangered plants in China and is the only evergreen broad-leaved shrub in desert areas. We analyzed the ecological stoichiometric characteristics of leaves, stems, roots, flowers and seeds of A. mongolicus in five habitats, namely fixed sandy land, semi-fixed sandy land, stony–sandy land, alluvial gravel slope and saline–alkali land. We found that (1) the nutrient contents of N, P and K were in the order of seed > flower > leaf > root > stem. The enrichment of the N, P and K in the reproductive organs promoted the transition from vegetative growth to reproductive growth. Additionally, (2) the contents of C, N, P and K and their stoichiometric ratios in different organs varied among different habitat types. The storage capacity of C, N and P was higher in sandy soil (fixed and semi-fixed sandy land), whereas the content of K was higher in gravelly soil (stony–sandy land and alluvial gravel slope), and the C:N, C:P and N:P were significantly higher in gravelly soil than those in sandy soil. A. mongolicus had higher nutrient use efficiency in stony–sandy land and alluvial gravel slope. Furthermore, (3) the C:N and N:P ratios in each organ were relatively stable among different habitats, whereas the K:P ratio varied greatly. The N:P ratios of leaves were all greater than 16 in different habitats, indicating that the growth was mainly limited by P. Moreover, (4) except for the P element, the content of each element and its stoichiometric ratio were affected by the interaction between organs and habitat. Habitat had a greater impact on C content, whereas organs had a greater influence on N, P and K content and C:N, C:P, C:K and N:P. MDPI 2023-01-16 /pmc/articles/PMC9863615/ /pubmed/36679127 http://dx.doi.org/10.3390/plants12020414 Text en © 2023 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
Dong, Xue
Zhang, Jinbo
Xin, Zhiming
Huang, Yaru
Han, Chunxia
Li, Yonghua
Lu, Qi
Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title_full Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title_fullStr Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title_full_unstemmed Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title_short Ecological Stoichiometric Characteristics in Organs of Ammopiptanthus mongolicus in Different Habitats
title_sort ecological stoichiometric characteristics in organs of ammopiptanthus mongolicus in different habitats
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9863615/
https://www.ncbi.nlm.nih.gov/pubmed/36679127
http://dx.doi.org/10.3390/plants12020414
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