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Multielement stoichiometry in Quercus variabilis under natural phosphorus variation in subtropical China.

Zhou X, Sun X, Du B, Yin S, Liu C - Sci Rep (2015)

Bottom Line: The results showed that element ratios were more stable (except for C:P and Mn:P) than individual element concentrations.The degree of homeostasis indicated that macroelements (N, P, and Ca) concentrations were more variable than microelements (Mn, Zn, and Al) under a varying element concentration in soils.These results suggest that local P-rich geochemistry alters leaf element concentrations, but not element ratios, and that plants are capable of meeting their needs for elements in certain proportions to achieve optimal performance under varying elemental conditions.

View Article: PubMed Central - PubMed

Affiliation: School of Agriculture and Biology and Research Center for Low-Carbon Agriculture, Shanghai Jiao Tong University, Dongchuan Rd. 800, Shanghai 200240, China.

ABSTRACT
Plant stoichiometry in relation to environmental factors has recently received increasing attention. However, regulations and variations of plant elements in different environments are not well understood. We investigated homeostasis and variation of macroelements (C, N, P, K, Ca, Mg, and S), essential microelements (Fe, Mn, and Zn) and non-essential elements (Al) in Quercus variabilis leaves at a range of natural P concentration from P-rich to P-deficient (typical subtropical conditions) soils. The results showed that element ratios were more stable (except for C:P and Mn:P) than individual element concentrations. Of the individual elements, protein-related elements (e.g. N, S, and Fe) were correlated with leaf P while non-protein elements (e.g. C, K, and Ca) were not. The degree of homeostasis indicated that macroelements (N, P, and Ca) concentrations were more variable than microelements (Mn, Zn, and Al) under a varying element concentration in soils. These results suggest that local P-rich geochemistry alters leaf element concentrations, but not element ratios, and that plants are capable of meeting their needs for elements in certain proportions to achieve optimal performance under varying elemental conditions.

No MeSH data available.


Related in: MedlinePlus

Relationships of element concentrations between soil and Q. variabilis leaves. Major axis (MA) regression (red) and 95% confidence lines (grey) are shown.
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f2: Relationships of element concentrations between soil and Q. variabilis leaves. Major axis (MA) regression (red) and 95% confidence lines (grey) are shown.

Mentions: Leaf element concentrations of N, P, Ca, Fe, and Zn at P-rich sites were higher than those at P-deficient sites (ANOVA, p < 0.05, Table 1). The only exception was Mn that displayed an opposite pattern (p < 0.05, Table 1). Leaf element:P ratios, however, did not differ significantly between the two site types; the exception was C:P and Mn:P that were lower at P-rich sites than at P-deficient sites (Table 1). P-rich sites were statistically separated from P-deficient sites along the first component (explaining 22% of the variation, F = 15.7, p = 0.0004) of PCA using leaf element concentrations (C, N, P, S, K, Ca, Mg, Al, Fe, Mn, and Zn) (Fig. 3).


Multielement stoichiometry in Quercus variabilis under natural phosphorus variation in subtropical China.

Zhou X, Sun X, Du B, Yin S, Liu C - Sci Rep (2015)

Relationships of element concentrations between soil and Q. variabilis leaves. Major axis (MA) regression (red) and 95% confidence lines (grey) are shown.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4296308&req=5

f2: Relationships of element concentrations between soil and Q. variabilis leaves. Major axis (MA) regression (red) and 95% confidence lines (grey) are shown.
Mentions: Leaf element concentrations of N, P, Ca, Fe, and Zn at P-rich sites were higher than those at P-deficient sites (ANOVA, p < 0.05, Table 1). The only exception was Mn that displayed an opposite pattern (p < 0.05, Table 1). Leaf element:P ratios, however, did not differ significantly between the two site types; the exception was C:P and Mn:P that were lower at P-rich sites than at P-deficient sites (Table 1). P-rich sites were statistically separated from P-deficient sites along the first component (explaining 22% of the variation, F = 15.7, p = 0.0004) of PCA using leaf element concentrations (C, N, P, S, K, Ca, Mg, Al, Fe, Mn, and Zn) (Fig. 3).

Bottom Line: The results showed that element ratios were more stable (except for C:P and Mn:P) than individual element concentrations.The degree of homeostasis indicated that macroelements (N, P, and Ca) concentrations were more variable than microelements (Mn, Zn, and Al) under a varying element concentration in soils.These results suggest that local P-rich geochemistry alters leaf element concentrations, but not element ratios, and that plants are capable of meeting their needs for elements in certain proportions to achieve optimal performance under varying elemental conditions.

View Article: PubMed Central - PubMed

Affiliation: School of Agriculture and Biology and Research Center for Low-Carbon Agriculture, Shanghai Jiao Tong University, Dongchuan Rd. 800, Shanghai 200240, China.

ABSTRACT
Plant stoichiometry in relation to environmental factors has recently received increasing attention. However, regulations and variations of plant elements in different environments are not well understood. We investigated homeostasis and variation of macroelements (C, N, P, K, Ca, Mg, and S), essential microelements (Fe, Mn, and Zn) and non-essential elements (Al) in Quercus variabilis leaves at a range of natural P concentration from P-rich to P-deficient (typical subtropical conditions) soils. The results showed that element ratios were more stable (except for C:P and Mn:P) than individual element concentrations. Of the individual elements, protein-related elements (e.g. N, S, and Fe) were correlated with leaf P while non-protein elements (e.g. C, K, and Ca) were not. The degree of homeostasis indicated that macroelements (N, P, and Ca) concentrations were more variable than microelements (Mn, Zn, and Al) under a varying element concentration in soils. These results suggest that local P-rich geochemistry alters leaf element concentrations, but not element ratios, and that plants are capable of meeting their needs for elements in certain proportions to achieve optimal performance under varying elemental conditions.

No MeSH data available.


Related in: MedlinePlus