Predicting plant response to arbuscular mycorrhizas: The role of host functional traits

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• 作者：Haishui Yang^a ; ^{yanghaishui@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{yanghaishui@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Jianglai Xu^a ; ^{2013101046@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yi Guo^a ; ^{11112132@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Roger T. Koide^b ; ^{rogerkoide@byu.edu" class="auth_mail" title="E-mail the corresponding author} ; Yajun Dai^a ; ^{2013101010@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Mingmin Xu^c ; ^{2013116030@njau.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Liping Bian^d ; ^{blp_njau@163.com" class="auth_mail" title="E-mail the corresponding author} ; Xinmin Bian^a ; ^{bjxlml@163.com" class="auth_mail" title="E-mail the corresponding author} ; Qian Zhang^e ; ^{east.qzhang@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Arbuscular mycorrhizal fungi ; Growth response ; Plant functional type ; Meta-analysis
• 刊名：Fungal Ecology
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：20
• 期：Complete
• 页码：79-83
• 全文大小：419 K

文摘

The arbuscular mycorrhiza (AM) is among the most ubiquitous symbiosis in the world. A meta-analysis of 759 articles (1978–2012) was conducted to test whether ecologically important host plant traits (N-fixation and C-fixation pathway) affect the response of the plant to mycorrhizal colonization. We found that the effect of N-fixation on mycorrhizal growth response (MGR) depended on whether the plant was woody or a forb. N-fixing forbs had a higher MGR than non-N-fixing forbs, but the reverse was true for woody plants. Moreover, C₄-grasses had significantly higher MGR than C₃-grasses, but no significant difference was found between C₃ and C₄ forbs, or between C₃ and C₄ woody species. Overall, woody species had higher MGR than any other functional group. These results demonstrate that MGR does depend on host functional characteristics, but neither N-fixation capacity nor C-fixation pathway are apparently fundamental controllers of MGR. Instead, it would appear possible that these traits influence MGR only insofar as they influence more fundamental functions such as P demand and P supply.