作者
Zobaida Lahari, Sarah van Boerdonk, Olumide Owolabi Omoboye, Michael Reichelt, Monica Höfte, Jonathan Gershenzon, Godelieve Gheysen, Chhana Ullah
发表日期
2024/1
期刊
New Phytologist
卷号
241
期号
2
页码范围
827-844
简介
- Strigolactones (SLs) are carotenoid‐derived phytohormones that regulate plant growth and development. While root‐secreted SLs are well‐known to facilitate plant symbiosis with beneficial microbes, the role of SLs in plant interactions with pathogenic microbes remains largely unexplored.
- Using genetic and biochemical approaches, we demonstrate a negative role of SLs in rice (Oryza sativa) defense against the blast fungus Pyricularia oryzae (syn. Magnaporthe oryzae).
- We found that SL biosynthesis and perception mutants, and wild‐type (WT) plants after chemical inhibition of SLs, were less susceptible to P. oryzae. Strigolactone deficiency also resulted in a higher accumulation of jasmonates, soluble sugars and flavonoid phytoalexins in rice leaves. Likewise, in response to P. oryzae infection, SL signaling was downregulated, while jasmonate and sugar content increased markedly. The jar1 mutant unable …
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