Variation of growth and transcriptome responses to arbuscular mycorrhizal symbiosis in different foxtail millet lines

Botanical Studies

Original Article

Ou-Chi Chang¹  Wei-Yi Lin¹ 

[1] Department of Agronomy, National Taiwan University, 106319, Taipei, Taiwan;

关键词: Arbuscular mycorrhizal fungi;    Foxtail millet;    Symbiosis;    Transcriptome;   

DOI  :  10.1186/s40529-023-00391-y

 received in 2023-03-10, accepted in 2023-06-08,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundArbuscular mycorrhizal fungi (AMF) have been applied to promote the growth of different crop species, but knowledge about the impacts of symbiosis on foxtail millet at the physiological and molecular levels have remained limited. In this study, we compared the mycorrhization phenotypes of one cultivar and three different landraces and performed a comprehensive transcriptomic analysis to assess the effects of genetic variation on the responses to symbiosis.ResultsOur results showed that colonization by AMF did not enhance biomass accumulation but significantly increased grain production only in three lines. More than 2,000 genes were affected by AMF colonization in all lines. Most AM symbiosis-conserved genes were induced, but the induction levels varied between lines. Gene Ontology (GO) analysis showed that Biological Function terms related to nitrogen transport and assimilation were only enriched in TT8. Similarly, two of phosphate starvation-induced phosphate transporters were only simultaneously downregulated in TT8. In the other two lines, the enrichment of GO terms associated with cell wall reorganization and lignification was observed, though the effects were different.ConclusionThis study reveals the impacts of genetic variation of millet lines on the responses to AM symbiosis and provides information regarding AMF application for millet production.

【 授权许可】

CC BY   
© The Author(s) 2023

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