Effects of Salt on Root Aeration, Nitrification, and Nitrogen Uptake in Mangroves
Effects of Salt on Root Aeration, Nitrification, and Nitrogen Uptake in Mangroves
复制标题
盐对红树林根部通气、硝化和氮吸收的影响
作者：
Zhao Y.;Wang X.;Wang Y.S.;Jiang Z.Y.;Ma X.X.;Inyang A.I;Chen H.
使用Avicennia Marina（Forsk。）Vierh的幼苗研究了盐对生长，根部解剖学，径向氧损失（ROL）和氮（N）动力学的潜在影响。结果表明中等盐度（200 mM NaCl）
The potential effects of salt on the growth, root anatomy, radial oxygen loss (ROL), and nitrogen (N) dynamics in mangroves were investigated using the seedlings of Avicennia marina (Forsk.) Vierh. The results showed that a moderate salinity (200 mM NaCl) appeared to have little negative effect on the growth of A. marina. However, higher salt stresses (400 and 600 mM NaCl) significantly inhibited the biomass yield. Concentrations of N in the roots and leaves decreased sharply with increasing salinity. Nevertheless, the presence of salt directly altered root anatomy (e.g., reduced root porosity and promoted suberization within the exodermis and endodermis), leading to a significant reduction in ROL. The results further showed that reduced ROL induced by salt could restrain soil nitrification, resulting in less ammonia-oxidizing archaea and bacteria (AOA and AOB) gene copies and lower concentrations of NO3− in the soils. While increased root suberization induced by salt inhibited NH4+ and NO3− uptake and influx into the roots. In summary, this study indicated that inhibited root aeration may be a defense response to salt, however these root symptoms were not advantageous for rhizosphere nitrification and N uptake by A. marina.
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影响因子：
4.9
作者：
L. Schreiber;R. Franke;Klaus Hartmann
通讯作者：
L. Schreiber;R. Franke;Klaus Hartmann
影响因子：
5
作者：
Wang, Yong-Feng;Gu, Ji-Dong
通讯作者：
Gu, Ji-Dong
DOI：
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发表时间：
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期刊：
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影响因子：
--
作者：
Deborah;-A.;Clark;Sandra Brown;David;-W.;Kicklighter;Jeffrey;-Q.;Chambers;John;-R.;
通讯作者：
Deborah;-A.;Clark;Sandra Brown;David;-W.;Kicklighter;Jeffrey;-Q.;Chambers;John;-R.;
影响因子：
6.4
作者：
ARMSTRONG, W
通讯作者：
ARMSTRONG, W
影响因子：
4.9
作者：
Lin, Yi-Ming;Liu, Xiao-Wei;Lin, Guang-Hui
通讯作者：
Lin, Guang-Hui