Abstract：
:Many studies have established that arbuscular mycorrhizal fungi transfer N to the host plant. However, the role and importance of arbuscular mycorrhiza (AM) in plant N nutrition is still uncertain, as are the C/N interactions within the symbiosis. Published reports provide differing, and often contradictory, results that are difficult to combine in a coherent framework. This review explores questions such as: What makes the difference between a positive and a negative effect of AM on plant N nutrition? Is the mycorrhizal N response (MNR) correlated to the mycorrhizal growth response (MGR), and how or under which conditions? Is the MNR effect on plant growth C mediated? Is plant C investment on fungal growth related to N needs or N benefit? How is the N for C trade between symbionts regulated? The patternless nature of current knowledge is made evident, and possible reasons for this are discussed.
journal_name
Mycorrhizajournal_title
Mycorrhizaauthors
Corrêa A,Cruz C,Ferrol Ndoi
10.1007/s00572-015-0627-6subject
Has Abstractpub_date
2015-10-01 00:00:00pages
499-515issue
7eissn
0940-6360issn
1432-1890pii
10.1007/s00572-015-0627-6journal_volume
25pub_type
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