Associate plant parasitic nematodes to weed species in some newly reclaimed lands

• Published in: Scientific reports Vol. 13; no. 1; p. 21923
• Main Authors: AbdelRazek, Ghena Mamdouh, Balah, Mohamed Abdelaziz
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 11-12-2023; Nature Publishing Group; Nature Portfolio
• Subjects: 631/158; 631/449; Barley; Criconemoides; Crop damage; Crop yield; Crops; Ditylenchus; Economic importance; Helicotylenchus; Hordeum marinum; Humanities and Social Sciences; Longidorus; Meloidogyne; multidisciplinary; Nematodes; Plant parasites; Pratylenchus; Quinoa; Rhizosphere; Rotylenchulus; Science; Science (multidisciplinary); Soil characteristics; Sonchus oleraceus; Surveys; Tomatoes; Weeds; Wheat; Xiphinema
• ISSN: 2045-2322; 2045-2322
• DOI: 10.1038/s41598-023-49357-x

Plant-parasitic nematodes (PPNs) are vital soil organisms well-known to damage and reduce crop yield worldwide. Surveys were attempts to determine the impact of weed species on the communities and composition of nematodes in barley, wheat, quinoa, eggplant, and tomato crops in Alexandria and Ismailia regions of Egypt. During the surveys, eight occurring genera of nematodes were found namely;
Meloidogyne
spp,
Pratylenchus
spp,
Helicotylenchus
spp,
Rotylenchulus
spp,
Xiphinema
spp
, Criconemoides
spp,
Ditylenchus
spp
,
and
Longidorus
spp associated with the soil’s rhizosphere of 28 weed species belonging to 12 families. Among these weeds,
Hordeum marinum
and
Sonchus oleraceus
were good hosts to nematode species. Both wheat and barley had higher nematode diversity than quinoa in the winter season.
Pratylenchus
spp
, Meloidogyne
spp and
Rotylenchulus
spp can be considered vital potential PPNs with economic importance. Nematode abundances and structural indices varied greatly based on the host weed species, crop types and soil characteristics. A positive correlation was monitored among weeds, nematode frequencies and relative abundances as well as their crops. Finally, weed species are critical components in nematode communities that may increase the incidence and severity of nematode risks based on crop type and soil characteristics. Therefore weeds should be managed properly to diminish reservoir sites when developing nematode management options.