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Potential of exogenous treatment with dehydroascorbate to control root-knot nematode infection in rice

(2023) RICE. 16(1).
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Abstract
Induced resistance (IR) is a unique physiological state characterized by reduced plant susceptibility to (a)biotic stress. Our previous studies showed that exogenous foliar application of dehydroascorbate (DHA), the oxidized form of ascorbic acid, induces systemic resistance against root-knot nematode Meloidogyne graminicola in rice. In the present study, the potential of DHA in protecting rice plants against M. graminicola was evaluated in lab, pot, and field studies. In an experiment where the interval between foliar treatment and inoculation was varied, 20 mM DHA was found to protect rice plants from M. graminicola for at least 14 days. Pot and field studies confirmed that 10 or 20 mM DHA are highly effective in reducing gall formation and led to a significant increase in rice seed yield. A half dose of DHA (10 mM) combined with another IR-stimulus - piperonylic acid (PA) 300 & mu;M - was at par with DHA 20 mM, leading to reductions in gall formation of more than 80%. In in vitro bioassays, DHA was found to be highly nematicidal to the second-stage juveniles of M. graminicola, with more than 90% mortality within 3 h of exposure to 10 or 20 mM concentrations. While seed treatment had no effect, root drenching or root dipping was also effective in reducing rice susceptibility to M. graminicola, next to foliar treatment. As a dual-action compound with extended protection and ease of application, DHA has great potential for effective nematode management in rice. Key Message & BULL; This research demonstrates the use of dehydroascorbate as a sustainable approach for M. graminicola management in rice.& BULL; DHA protects the rice plants from M. graminicola for at least up to 14 days after its application.& BULL; Pot and field studies showed the great potential of DHA in reducing nematode infection with a concomitant increase in seed yield.& BULL; DHA was found compatible with another IR stimulus PA in reducing rice susceptibility to M. graminicola.& BULL; In addition to reducing rice susceptibility, DHA was found highly nematicidal to M. graminicola.& BULL; DHA is effective in rice as a foliar treatment, root drench, or root dip treatment against M. graminicola.
Keywords
SYSTEMIC ACQUIRED-RESISTANCE, ACIBENZOLAR-S-METHYL, BACTERIAL SPOT, SALICYLIC-ACID, COS-OGA, DEFENSE, TOMATO, BENZOTHIADIAZOLE, ACTIVATION, CHALLENGES, Dehydroascorbate, Induced resistance, Integrated pest management, Meloidogyne graminicola, Nematicidal, Rice

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MLA
Chavan, Satish Namdeo, et al. “Potential of Exogenous Treatment with Dehydroascorbate to Control Root-Knot Nematode Infection in Rice.” RICE, vol. 16, no. 1, 2023, doi:10.1186/s12284-023-00644-1.
APA
Chavan, S. N., Tumpa, F. H., Khokon, Md. A. R., & Kyndt, T. (2023). Potential of exogenous treatment with dehydroascorbate to control root-knot nematode infection in rice. RICE, 16(1). https://doi.org/10.1186/s12284-023-00644-1
Chicago author-date
Chavan, Satish Namdeo, Farzana Haque Tumpa, Md. Atiqur Rahman Khokon, and Tina Kyndt. 2023. “Potential of Exogenous Treatment with Dehydroascorbate to Control Root-Knot Nematode Infection in Rice.” RICE 16 (1). https://doi.org/10.1186/s12284-023-00644-1.
Chicago author-date (all authors)
Chavan, Satish Namdeo, Farzana Haque Tumpa, Md. Atiqur Rahman Khokon, and Tina Kyndt. 2023. “Potential of Exogenous Treatment with Dehydroascorbate to Control Root-Knot Nematode Infection in Rice.” RICE 16 (1). doi:10.1186/s12284-023-00644-1.
Vancouver
1.
Chavan SN, Tumpa FH, Khokon MdAR, Kyndt T. Potential of exogenous treatment with dehydroascorbate to control root-knot nematode infection in rice. RICE. 2023;16(1).
IEEE
[1]
S. N. Chavan, F. H. Tumpa, Md. A. R. Khokon, and T. Kyndt, “Potential of exogenous treatment with dehydroascorbate to control root-knot nematode infection in rice,” RICE, vol. 16, no. 1, 2023.
@article{01HRYPBGQCQXVZCAW053S1MSAJ,
  abstract     = {{Induced resistance (IR) is a unique physiological state characterized by reduced plant susceptibility to (a)biotic stress. Our previous studies showed that exogenous foliar application of dehydroascorbate (DHA), the oxidized form of ascorbic acid, induces systemic resistance against root-knot nematode Meloidogyne graminicola in rice. In the present study, the potential of DHA in protecting rice plants against M. graminicola was evaluated in lab, pot, and field studies. In an experiment where the interval between foliar treatment and inoculation was varied, 20 mM DHA was found to protect rice plants from M. graminicola for at least 14 days. Pot and field studies confirmed that 10 or 20 mM DHA are highly effective in reducing gall formation and led to a significant increase in rice seed yield. A half dose of DHA (10 mM) combined with another IR-stimulus - piperonylic acid (PA) 300 & mu;M - was at par with DHA 20 mM, leading to reductions in gall formation of more than 80%. In in vitro bioassays, DHA was found to be highly nematicidal to the second-stage juveniles of M. graminicola, with more than 90% mortality within 3 h of exposure to 10 or 20 mM concentrations. While seed treatment had no effect, root drenching or root dipping was also effective in reducing rice susceptibility to M. graminicola, next to foliar treatment. As a dual-action compound with extended protection and ease of application, DHA has great potential for effective nematode management in rice.

 Key Message & BULL; This research demonstrates the use of dehydroascorbate as a sustainable approach for M. graminicola management in rice.& BULL; DHA protects the rice plants from M. graminicola for at least up to 14 days after its application.& BULL; Pot and field studies showed the great potential of DHA in reducing nematode infection with a concomitant increase in seed yield.& BULL; DHA was found compatible with another IR stimulus PA in reducing rice susceptibility to M. graminicola.& BULL; In addition to reducing rice susceptibility, DHA was found highly nematicidal to M. graminicola.& BULL; DHA is effective in rice as a foliar treatment, root drench, or root dip treatment against M. graminicola.}},
  articleno    = {{29}},
  author       = {{Chavan, Satish Namdeo and Tumpa, Farzana Haque and  Khokon, Md. Atiqur Rahman and Kyndt, Tina}},
  issn         = {{1939-8425}},
  journal      = {{RICE}},
  keywords     = {{SYSTEMIC ACQUIRED-RESISTANCE,ACIBENZOLAR-S-METHYL,BACTERIAL SPOT,SALICYLIC-ACID,COS-OGA,DEFENSE,TOMATO,BENZOTHIADIAZOLE,ACTIVATION,CHALLENGES,Dehydroascorbate,Induced resistance,Integrated pest management,Meloidogyne graminicola,Nematicidal,Rice}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{16}},
  title        = {{Potential of exogenous treatment with dehydroascorbate to control root-knot nematode infection in rice}},
  url          = {{http://doi.org/10.1186/s12284-023-00644-1}},
  volume       = {{16}},
  year         = {{2023}},
}

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