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Rice flooding negatively impacts root branching and arbuscular mycorrhizal colonization, but not fungal viability
Author(s) -
VALLINO MARTA,
FIORILLI VALENTINA,
BONFANTE PAOLA
Publication year - 2014
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.12177
Subject(s) - colonization , arbuscular mycorrhizal fungi , flooding (psychology) , biology , arbuscular mycorrhizal , agronomy , botany , symbiosis , horticulture , ecology , inoculation , bacteria , psychology , genetics , psychotherapist
Understanding the mechanisms which regulate the symbiotic interactions between rice roots and the arbuscular mycorrizal (AM) fungi is becoming increasingly important in order to enhance plant yield in the context of sustainable agriculture. We have investigated the complex interactions among rice roots, AM symbiosis, and the environment focusing on the root development in flooding and upland conditions. Due to an experimental system where mycorrhizal rice plants can be moved from flooded to dry conditions and vice versa , and the use of morphological and molecular approaches, we conclusively demonstrated that the water regime is the driving force that decreases AM colonization under flooding conditions, by directly influencing root architecture (decreasing of large lateral roots) and anatomy (increasing of aerenchyma), but without impacting the basic AM functionality.