Cell Wall Dynamics in the Parasitic Plant (Striga) and Rice Pathosystem

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dc.contributor.authorBarminga Damaris
dc.contributor.authorMutinda Sylvia
dc.contributor.authorMobegi Fredrick M.
dc.contributor.authorKibet Willy
dc.contributor.authorHale Brett
dc.contributor.authorAnami Sylvester
dc.contributor.authorWijeratne Asela
dc.contributor.authorBellis Emily S.
dc.contributor.authorRuno Steven
dc.date.accessioned2025-05-13T08:19:20Z
dc.date.available2025-05-13T08:19:20Z
dc.date.issued2025
dc.descriptionArticle
dc.description.abstractIn the plant-plant pathosystem of rice (Oryza sativa) and the parasitic plant Striga hermonthica, cell walls from either plant are important defensive and offensive structures. Here, we reveal the cell wall dynamics in both Striga and rice using simultaneous RNA sequencing. We used weighted gene co-expression network analysis to home in on cell wall modification processes occurring in interactions with a resistant rice cultivar (Nipponbare) compared with a susceptible one (IAC 165). Likewise, we compared the cell wall dynamics in Striga infecting resistant and susceptible rice. Our study revealed an intense battlement at the Striga-rice cell walls involving both parasite (offense) and host (defense) factors, the outcome of which makes the difference between successful or failed parasitism. Striga activates genes encoding cell wall-degrading enzymes to gain access to the host, expansins to allow for cell elongation, and pectin methyl esterase inhibitors for rigidity during infection. In the susceptible host, immune response processes are not induced, and Striga-derived cell wall-degrading enzymes easily breach the host cell wall, resulting in successful parasitism. In contrast, the resistant host invokes immune responses modulated by phytohormones to fortify the cell wall through polysaccharides and lignin deposition. Through these processes, the cell wall of the resistant host successfully obstructs parasite entry. We discuss the implications of these findings in the context of practical agriculture in which cell wall modification can be used to manage parasitic plants.
dc.description.sponsorshipNational Academy of Sciences The Arkansas Biosciences Institute
dc.identifier.citationBarminga, Damaris, et al. "Cell wall dynamics in the parasitic plant (Striga) and rice pathosystem." Molecular Plant-Microbe Interactions 38.2 (2025): 285-296.
dc.identifier.urihttps://doi.org/10.1094/MPMI-06-24-0064-FI
dc.identifier.urihttps://ir-library.ku.ac.ke/handle/123456789/30055
dc.language.isoen
dc.publisherMPMI
dc.titleCell Wall Dynamics in the Parasitic Plant (Striga) and Rice Pathosystem
dc.typeArticle
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