Deciphering the Role of Strigolactone Hormone in Plant Developmental Processes
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| Year of publication | 2020 |
| Type | Conference abstract |
| MU Faculty or unit | |
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| Description | Plant hormones are endogenous signalling molecules that modulates the physio-morphological and molecular responses in plants. Individual and joint action of multiple hormones regulate diverse array of metabolic pathways which in turn triggers the phenotypic response. A recently identified plant hormone Strigolactones, (SLs) is known to control several above and below ground growth and developmental events in plants. In plant root, SLs promote primary root growth, root hair elongation and repress lateral root development. Whereas, in plant shoot, SLs regulate shoot branching, leaf senescence, stem secondary thickening, photo morphogenesis and stem elongation. In my present thesis, we explored different aspects of Strigolactone signaling in plant. Genetic studies on SMXL7 and SMAX1 demonstrated distinct developmental roles for each, but very little is known about these repressors in terms of their sequence features. In this study, we performed an extensive comparative analysis of SMXLs and determined their phylogenetic and evolutionary history in the plant lineage. In the first chapter, our results show that SMXL family members can be sub-divided into four distinct phylogenetic clades/classes, with an ancient SMAX1 and further, we identified the clade-specific motifs that have evolved and that might act as determinants of SLKAR signalling specificity. In the second chapter, we focused on role of strigolactone in photosynthesis and high light stress tolerance through transcriptome-based study. And their chapter is focused on the cross talk of SL with the miRNA pathway controlling root and shoot development |
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