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Nitric Oxide Plays an Important Role in ?-Aminobutyric Acid-Induced Resistance to Botrytis cinerea in Tomato Plants.


ABSTRACT: ?-Aminobutyric acid (BABA) has consistently been reported to enhance plant immunity. However, the specific mechanisms and downstream components that mediate this resistance are not yet agreed upon. Nitric oxide (NO) is an important signal molecule involved in a diverse range of physiological processes, and whether NO is involved in BABA-induced resistance is interesting. In this study, treatment with BABA significantly increased NO accumulation and reduced the sensitivity to Botrytis cinerea in tomato plants. BABA treatment reduced physical signs of infection and increased both the transcription of key defense marker genes and the activity of defensive enzymes. Interestingly, compared to treatment with BABA alone, treatment with BABA plus cPTIO (NO specific scavenger) not only significantly reduced NO accumulation, but also increased disease incidence and lesion area. These results suggest that NO accumulation plays an important role in BABA-induced resistance against B. cinerea in tomato plants.

SUBMITTER: Li R 

PROVIDER: S-EPMC7143515 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Nitric Oxide Plays an Important Role in <i>β</i>-Aminobutyric Acid-Induced Resistance to <i>Botrytis cinerea</i> in Tomato Plants.

Li Rui R   Sheng Jiping J   Shen Lin L  

The plant pathology journal 20200401 2


<i>β</i>-Aminobutyric acid (BABA) has consistently been reported to enhance plant immunity. However, the specific mechanisms and downstream components that mediate this resistance are not yet agreed upon. Nitric oxide (NO) is an important signal molecule involved in a diverse range of physiological processes, and whether NO is involved in BABA-induced resistance is interesting. In this study, treatment with BABA significantly increased NO accumulation and reduced the sensitivity to <i>Botrytis c  ...[more]

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