Insight into strigolactone hormone functions in plant parasitic weeds: a regulatory perspective
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Date
2022-09
Journal Title
Journal ISSN
Volume Title
Publisher
CSIR-NIScPR
Abstract
The strigolactones (SLs) are plants hormones that have multiple functions in architecture and development. The roles of SLs in shoot branching and stem secondary growth of autotrophic plants are established. SL is also involved in the interaction between root parasitic plants and their host plants. SLs are exudates by the root of the host plant in search of a fungal partner for symbiotic association, while parasitic plants utilize this facility to detect the host root. The first formed tubercle of Philapanhche, whose germinations are driven by host-derived SLs, exudates parasitic derived SLs (PSLs) and could encourages germination of the adjacent parasitic seeds, resulting in parasite cluster formation. The existence of aboveground spikes in clusters suggests an intriguing approach for increasing parasite population by amplifying PSLs, which result in massive parasitic seed germination. PSLs probably have a role in the increased branching of Broomrapes opposing the host plant, resulting in the parasites' clustered appearance aboveground. This review highlights the distinct roles of SLs and PSLs, and their potential role in host-parasitic interaction.
Description
Keywords
Auxin, Broomrape, Carotenoid cleavage dioxygenase (CCDs) Cyanohydrins, Cytokinin, Haustoria, Hostparasitic interaction, Karrikin, Orobanche, Philapanhche, Phloem Root parasite, Striga, Xylem
Citation
Srivastava Rakesh, Bajpai Rajesh, Khan Zeba, Singh Surendra Pratap, Mehrotra Rajesh, Dubey Neeraj Kumar. Insight into strigolactone hormone functions in plant parasitic weeds: a regulatory perspective. Indian Journal of Experimental Biology. 2022 Sep; 60(9): 659-666