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Varietal differences in the growth responses of rice to an arbuscular mycorrhizal fungus under natural upland conditions.

Identifieur interne : 000E21 ( Main/Corpus ); précédent : 000E20; suivant : 000E22

Varietal differences in the growth responses of rice to an arbuscular mycorrhizal fungus under natural upland conditions.

Auteurs : Thongkhoun Sisaphaithong ; Shinichi Hanai ; Rie Tomioka ; Yoshihiro Kobae ; Aiko Tanaka ; Katsuya Yano ; Chisato Takenaka ; Shingo Hata

Source :

RBID : pubmed:28010164

English descriptors

Abstract

Seedlings of three rice (Oryza sativa L.) varieties (one indica, ARC5955; and two japonica, Nipponbare and Koshihikari) with or without pre-colonization by the arbuscular mycorrhizal fungus Funneliformis mosseae were transplanted into an upland field and grown to maturity. Pre-colonization had no effect on the yield of Nipponbare or Koshihikari. However, pre-colonized ARC5955 exhibited a strong tendency toward increased yield, which was accompanied by increases in the percentage of ripened grain and the 1000-grain weight. The rice roots were also colonized by indigenous arbuscular mycorrhizal fungi in the field, but these had only limited effects on shoot biomass and grain yields. We speculate that F. mosseae may have exhibited priority effects, allowing it to dominate the rice roots. There was no significant difference in the contents of most mineral elements in the shoots of pre-colonized ARC5955 at harvest, indicating that some other factor is responsible for the observed yield increase.

DOI: 10.1080/15592324.2016.1274483
PubMed: 28010164
PubMed Central: PMC5400106

Links to Exploration step

pubmed:28010164

Le document en format XML

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