Unveiling the drivers of nematode community structure and function across rice agroecosystems

In the rice agroecosystems of Southeast Asia, rice root knot nematode ( Meloidogyne graminicola ) significantly impairs yield, representing a major species within the ‘graminis-group’ known for its morphological similarities with other root knot nematodes (RKNs). This study delves into the variations in reproductive potential, morphology, morphometrics, and genetic diversity among thirty RKN populations in rice across three distinct agroecological zones in Jharkhand, India. Despite notable differences in reproductive potential among the populations, morphological and morphometric correlations to reproductive potential were inconclusive. However, male and juvenile morphometrics were crucial for identifying intraspecific variability. Genetic analysis utilizing five molecular markers (ITS, 18 S rRNA, D2-D3 of 28 S, COX-I, and COX-II) affirmed the populations as M. graminicola , with ITS marker revealing significant intraspecific variability. Phylogenetic analysis underscored the close relationship between M. oryzae and M. graminicola , distinct from other mitotic RKN species. Low genetic distance and nucleotide diversity, coupled with high haplotype diversity, negative Tajima’s D, and Fu’s Fs of haplotype network analysis, suggested that all M. graminicola populations are expanding. These findings highlight the urgent need for comprehensive management strategies against M. graminicola , providing valuable insights for growers, extension officials, and plant breeders to develop targeted management approaches and resistance breeding programs. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-73980-x.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Unveiling the drivers of nematode community structure and function across rice agroecosystems

Cited by 3 publications

References 53 publications

Land use and temperature shape the beta diversity of soil nematodes across the Mollisol zone in northeast China

Land use and temperature shape the beta diversity of soil nematodes across the Mollisol zone in northeast China

Urban greenspaces shape soil nematode community across soil depth gradients: Belowground life at The Ohio State University

Intraspecific variability of rice root knot nematodes across diverse agroecosystems for sustainable management

Contact Info

Product

Resources

About