Abstract：
BACKGROUND:Wheat straw is a rich resource worldwide. Straw return is an effective strategy to alleviate soil-borne diseases on monoculture watermelon. Previous studies focus on soil structure, physical and chemical properties; however, little is known about the molecular responses on host plant. RESULTS:No significant difference on the population of Fusarium oxysporum f.sp. niveum race 1(Fon1) in rhizosphere soil was found between control (no addition of wheat straw) and the treated groups (addition of 1% (T1) or 2% (T2) wheat straw). RNA-Seq analysis showed that 3419 differentially expressed genes were clustered into 8 profiles. KEGG analysis revealed that phenylpropanoid biosynthesis and plant hormone signal transduction were involved in wheat straw induced response in monoculture watermelon. Genes in lignin biosynthesis were found to be upregulated, and the lignin and auxin contents were higher in T1 and T2 compared to the control. Lignin was also enriched and the Fon1 population decreased in watermelon roots treated with wheat straw. The enzyme activities of phenylalanine ammonia-lyase and peroxidase were increased. CONCLUSIONS:Our data suggest that the addition of wheat straw enhances the defense response to Fon1 infection in watermelon through increasing lignin and auxin biosynthesis.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Tang L,Nie S,Li W,Fan C,Wang S,Wu F,Pan Kdoi
10.1186/s12870-019-2134-ysubject
Has Abstractpub_date
2019-12-11 00:00:00pages
551issue
1issn
1471-2229pii
10.1186/s12870-019-2134-yjournal_volume
19pub_type
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