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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.


H values of 10 elements and 9 element:P ratios in Q. variabilis leaves. Elements on the x-axis are grouped by macronutrients (N, P, S, K, Ca, and Mg), micronutrients (Fe, Mn, and Zn), and non-essential micronutrients (Al).The black bars represent individual elements while the white bars represent element:P ratios.
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f4: H values of 10 elements and 9 element:P ratios in Q. variabilis leaves. Elements on the x-axis are grouped by macronutrients (N, P, S, K, Ca, and Mg), micronutrients (Fe, Mn, and Zn), and non-essential micronutrients (Al).The black bars represent individual elements while the white bars represent element:P ratios.

Mentions: Among the 11 elements, only leaf N, P, Ca, and Fe concentrations were positively correlated with the soil counterparts (p = 0.01 to 0.04), while no significant correlation between leaf and soil was observed for other elements (Fig. 2, Supplementary Table S3). The homeostasis (expressed as H) of leaf N, P, Ca, and Fe (from 6.58 (Fe) to 16.67 (P)) was lower than that of other elements (S, K, Mg, Al, Mn, Na, and Zn, from 21.74 to 33.33) (Fig. 4, Supplementary Table S4). Comparatively, the homeostasis of element:P ratios was much higher than that of element concentrations (from 6.21 (Mn:P) to 163.93 (Fe:P)). The highest homeostasis of leaf element ratios was in K:P (71.43) and Fe:P (163.93) and the lowest in microelement:P ratios (e.g. Mn:P (6.21), Al:P (9.09), and Zn:P (12.89)) (Fig. 4, Supplementary Table S4).


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)

H values of 10 elements and 9 element:P ratios in Q. variabilis leaves. Elements on the x-axis are grouped by macronutrients (N, P, S, K, Ca, and Mg), micronutrients (Fe, Mn, and Zn), and non-essential micronutrients (Al).The black bars represent individual elements while the white bars represent element:P ratios.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f4: H values of 10 elements and 9 element:P ratios in Q. variabilis leaves. Elements on the x-axis are grouped by macronutrients (N, P, S, K, Ca, and Mg), micronutrients (Fe, Mn, and Zn), and non-essential micronutrients (Al).The black bars represent individual elements while the white bars represent element:P ratios.
Mentions: Among the 11 elements, only leaf N, P, Ca, and Fe concentrations were positively correlated with the soil counterparts (p = 0.01 to 0.04), while no significant correlation between leaf and soil was observed for other elements (Fig. 2, Supplementary Table S3). The homeostasis (expressed as H) of leaf N, P, Ca, and Fe (from 6.58 (Fe) to 16.67 (P)) was lower than that of other elements (S, K, Mg, Al, Mn, Na, and Zn, from 21.74 to 33.33) (Fig. 4, Supplementary Table S4). Comparatively, the homeostasis of element:P ratios was much higher than that of element concentrations (from 6.21 (Mn:P) to 163.93 (Fe:P)). The highest homeostasis of leaf element ratios was in K:P (71.43) and Fe:P (163.93) and the lowest in microelement:P ratios (e.g. Mn:P (6.21), Al:P (9.09), and Zn:P (12.89)) (Fig. 4, Supplementary Table S4).

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.