Nonhost Kitaake rice displays phenotypic characteristics of host resistant wheat and molecular biomarkers of both resistant and susceptible wheat in response to feeding by Hessian fly larvae

Journal of plant interactions

article

Subhashree Subramanyam¹  Jill A. Nemacheck¹ 

[1] a Crop Production and Pest Control Research Unit;b Department of Entomology, Purdue University

关键词: Gall midge;    rice;    compatible interaction;    incompatible interaction;    nonhost resistance;    cell wall permeability;   

DOI  :  10.1080/17429145.2021.1912421

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

The Hessian fly causes severe economic losses in host wheat. The genome complexity of hexaploid wheat makes functional characterization of candidate defense genes extremely challenging. Kitaake rice, a model and simpler genome, exhibits responses resembling nonhost resistance to Hessian fly. Larvae feeding on Kitaake rice plants do not develop beyond first-instars similar to resistant host wheat, although, they show prolonged survival. Kitaake nonhost differs from nonhost Brachypodium , where some larvae develop into second-instars. Kitaake rice plants exhibit a molecular response similar to not only resistant but also susceptible host wheat for six Hessian fly-responsive biomarker genes assayed. Further, in Kitaake, lectins and secondary metabolites may play an important role in early defense preventing the larvae from developing. The phenotypic and molecular characterization of Kitaake rice reveals its suitability as a surrogate model genome for undertaking downstream functional genomics studies of candidate wheat genes that respond to Hessian fly larval attack.

【 授权许可】

CC BY|CC BY-NC