期刊
ANNALS OF APPLIED BIOLOGY
卷 154, 期 2, 页码 195-204出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1744-7348.2008.00286.x
关键词
Aerobic soil; arbuscular mycorrhizae; rice (Oryza sativa ssp japonica); root fungal endophytes
Arbuscular mycorrhizal (AM) fungi are ubiquitous root symbionts that form intimate associations with the majority of plants growing in aerobic soil; fungal endophytes live internally, either interozellularly or intracellularly, and asymptomatically within plant tissues. Their presence is correlated with ail increased response to biotic and abiotic stress. The populations of AM and of endophytic fungi were Studied in the roots of different rice varieties grown in aerobic condition, in experimental fields in Vercelli, North Italy. All the rice varieties resulted colonised by AM fungi With a percentage of arbuscularisation ranging between 4% and 28%. Preliminary molecular analyses on sonic rice varieties showed that the AM Population was composed of fungi identified as Glomus intraradices, on the basis of 18S ribosomal gene. All the varieties analysed but One resulted in colonisation by endophytic fungi. About 300 fungal isolates were obtained, belonging mainly to the genera Neotyphodium, Stagonospora and Penicillium.
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