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dc.contributorChoukri, Hasnaeen_US
dc.contributorEl Haddad, Noureddineen_US
dc.contributorGupta, Priyankaen_US
dc.contributorBouhmadi, Keltoumen_US
dc.contributorEmmrich, Peter M. F.en_US
dc.contributorSingh, Akankshaen_US
dc.contributorEdwards, Anneen_US
dc.contributorMaalouf, Fouaden_US
dc.contributorBouhlal, Outmaneen_US
dc.contributorStaples, Jasmineen_US
dc.contributorAgrawal, Shiv Kumaren_US
dc.creatorAloui, Khawlaen_US
dc.identifier.citationKhawla Aloui, Hasnae Choukri, Noureddine El Haddad, Priyanka Gupta, Keltoum Bouhmadi, Peter M. F. Emmrich, Akanksha Singh, Anne Edwards, Fouad Maalouf, Outmane Bouhlal, Jasmine Staples, Shiv Kumar Agrawal. (8/10/2023). Impact of Heat and Drought Stress on Grasspea and Its Wild Relatives. Plants, 12 (19).en_US
dc.description.abstractGrasspea (Lathyrus sativus L.) is recognized as a highly drought-tolerant legume. However, excessive consumption of its seeds and green tissues causes neurolathyrism, a condition characterized by an irreversible paralysis of the legs induced by a neurotoxin amino acid called β-N-oxalyl-L-α, β- diaminopropionic acid (β-ODAP). The present study investigated the effects of heat, and combined heat + drought during the reproductive phase on physiological and phenological parameters, yield-related factors, ODAP content, and seed protein of 24 genotypes representing 11 Lathyrus species under controlled conditions. Analysis of variance revealed a highly significant effect (p < 0.001) of stress treatments and genotypes for all the traits. In general, heat stress individually or in combination with drought expedited phenology, reduced relative leaf water content, stimulated proline synthesis, and influenced chlorophyll concentration; the effects were more severe under the combined heat + drought stress. ODAP content in seeds ranged from 0.06 to 0.30% under no-stress conditions. However, under heat stress, there was a significant increase of 33% in ODAP content, and under combined stress (heat + drought), the increase reached 83%. Crude protein content ranged from 15.64 to 28.67% among no stress plants and decreased significantly by 23% under heat stress and by 36% under combined stress. The findings of this study also indicated substantial reductions in growth and grain yield traits under both heat stress and combined heat + drought stress. Six accessions namely IG 66026, IG 65018, IG 65687, IG 118511, IG 64931, and IG65273 were identified as having the most favorable combination of yield, protein content, and seed ODAP levels across all conditions. ODAP content in these six accessions varied from 0.07 to 0.11% under no stress and remained at moderate levels during both heat stress (0.09–0.14%) and combined stress (0.11–0.17%). IG 66026 was identified as the most stable genotype under drought and heat stress conditions with high protein content, and low ODAP content. By identifying those promising accessions, our results have established a basis for forthcoming grasspea breeding initiatives while paving the way for future research exploration into the fundamental mechanisms driving ODAP variation in the presence of both heat and drought stress conditions.en_US
dc.subjectgrain yielden_US
dc.subjectodap contenten_US
dc.titleImpact of Heat and Drought Stress on Grasspea and Its Wild Relativesen_US
dc.typeJournal Articleen_US
cg.creator.idChoukri, Hasnae: 0000-0003-3526-8245en_US
cg.creator.idEl Haddad, Noureddine: 0000-0001-8848-4799en_US
cg.creator.idMaalouf, Fouad: 0000-0002-7642-7102en_US
cg.creator.idBouhlal, Outmane: 0000-0003-4456-4062en_US
cg.creator.idAgrawal, Shiv Kumar: 0000-0001-8407-3562en_US
cg.subject.agrovoccrude proteinen_US
cg.subject.agrovocdrought stressen_US
cg.subject.agrovocheat stressen_US
cg.subject.agrovocgrass pea (lathyrus sativus)en_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerJohn Innes Centre - JICen_US
cg.contributor.centerUniversité Laval - ULavalen_US
cg.contributor.centerMohammed V University, Faculty of Science - UM5 - FSRen_US
cg.contributor.centerHassan II University, Faculty of Sciences Ben M'sik - UH2C- FSBMen_US
cg.contributor.crpGenetic Innovation - GIen_US
cg.contributor.funderGlobal Crop Diversity Trust - GCDTen_US
cg.contributor.funderBiotechnology and Biological Sciences Research Council - BBSRCen_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.coverage.regionNorthern Africaen_US
cg.isijournalISI Journalen_US
dc.identifier.statusOpen accessen_US
cg.subject.sdgSDG 2 - Zero hungeren_US
cg.subject.actionAreaGenetic Innovationen_US
cg.subject.impactAreaNutrition, health and food securityen_US
cg.contributor.initiativeAccelerated Breedingen_US

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