02228nas a2200229   4500008004100000022001400041245007100055210006900126260000800195300001100203490000800214520154200222653001001764653001101774653001701785653001701802653001001819100002901829700002101858700002001879856009901899       2021                        eng d  a0168-945200aAuxin: an emerging regulator of tuber and storage root development0 aAuxin an emerging regulator of tuber and storage root developmen  cMAY  a1108540 v3063 a<p>Many tuber and storage root crops owing to their high nutritional values offer high potential to overcome food security issues. The lack of information regarding molecular mechanisms that govern belowground storage organ development (except a tuber crop, potato) has limited the application of biotechnological strategies for improving storage crop yield. Phytohormones like gibberellin and cytokinin are known to play a crucial role in governing potato tuber development. Another phytohormone, auxin has been shown to induce tuber initiation and growth, and its crosstalk with gibberellin and strigolactone in a belowground modified stem (stolon) contributes to the overall potato tuber yield. In this review, we describe the crucial role of auxin biology in development of potato tubers. Considering the emerging reports from commercially important storage root crops (sweet potato, cassava, carrot, sugar beet and radish), we propose the function of auxin and related gene regulatory network in storage root development. The pattern of auxin content of stolon during various stages of potato tuber formation appears to be consistent with its level in various developmental stages of storage roots. We have also put-forward the potential of three-way interaction between auxin, strigolactone and mycorrhizal fungi in tuber and storage root development. Overall, we propose that auxin gene regulatory network and its crosstalk with other phytohormones in stolons/roots could govern belowground tuber and storage root development.</p>10aAuxin10aPotato10aStorage root10aSweet potato10aTuber1 aKondhare, Kirtikumar, R.1 aPatil, Aruna, B.1 aGiri, Ashok, P.  uhttps://library.ncl.res.in/content/auxin-emerging-regulator-tuber-and-storage-root-development02499nas a2200229   4500008004100000022001400041245003300055210003300088260000800121300001100129490000800140520189500148653001002043653001402053653002402067653002602091653001302117100002902130700002502159700002002184856006502204       2026                        eng d  a0168-945200aRootless survivors in plants0 aRootless survivors in plants  cMAR  a1129510 v3643 a<p>
	The root system provides anchorage, uptakes of nutrients and water, and forms different associations within soil environments that govern plant fitness, crop performance, and yield. Auxin controls almost all aspects of root development. Both shoot- and root-derived auxins contribute to formation of polar auxin transport, which is crucial for establishing and maintaining normal root architecture. The coordinated activities of auxin influx and efflux carriers establish necessary polar auxin transport. A variety of natural metabolites and synthetic compounds are shown to interfere with auxin metabolism, transporters and signaling pathways having a negative impact on root growth. In this review, we highlight the reports demonstrating the observance of rootless phenotypes in plants and associated molecular mechanisms. Rootless phenotypes can be produced under in vitro culture conditions by modulation of phytohormone combinations (especially auxin and cytokinin), and supplementation of naturally-occurring flavonoids and their glycosides or synthetic auxin transport inhibitors (1-Nnaphthylphthalamic acid and 2,3,5-triiodobenzoic acid) or under in vivo conditions by modulation of several genes directly or indirectly associated with auxin biology. Further, we describe the crosstalk of naturallyoccurring flavonoids (e.g. kaempferol, quercetin), their glycosides, and other metabolites (e.g. azelaic acid, cis-cinnamic acid) with auxin transporters, their mobile nature, and influence on root development. Moreover, we provide evolutionary perspective on the auxin and flavonoid pathways and their possible roles in naturally rootless plants. We also emphasize the importance of rootless or reduced root growth phenotypes in modern agriculture, and the pressing needs to utilize naturally occurring auxin transport inhibitors for industrial and research applications.</p>
10aAuxin10aFlavonoid10aFlavonoid-glycoside10aPolar auxin transport10arootless1 aKondhare, Kirtikumar, R.1 aLavhale, Santosh, G.1 aGiri, Ashok, P.  uhttps://library.ncl.res.in/content/rootless-survivors-plants