Abstract
BackgroundPotato is one of the most important food crops worldwide, contributing key nutrients to the human diet.Plant hormones act as vital switchers in the regulation of various aspects of developmental and growth stages in potato. Due to the broad impacts of hormones on many developmental processes, their role in potato growth and developmental stages has been investigated. Main body of the abstractThis review presents a description of hormonal basic pathways, various interconnections between hormonal network and reciprocal relationships, and clarification of molecular events underlying potato growth. In the last decade, new findings have emerged regarding their function during sprout development, vegetative growth, tuber initiation, tuber development, and maturation in potato. Hormones can control the regulation of various aspects of growth and development in potato, either individually or in combination with other hormones. The molecular characterization of interplay between cytokinins (CKs), abscisic acid (ABA), and auxin and/or gibberellins (GAs) during tuber formation requires further undertaking. Recently, new evidences regarding the relative functions of hormones during various stages and an intricate network of several hormones controlling potato tuber formation are emerging. Although some aspects of their functions are widely covered, remarkable breaks in our knowledge and insights yet exist in the regulation of hormonal networks and their interactions during different stages of growth and various aspects of tuber formation. Short conclusionThe present review focuses on the relative roles of hormones during various developmental stages with a view to recognize their mechanisms of function in potato tuber development. For better insight, relevant evidences available on hormonal interaction during tuber development in other species are also described. We predict that the present review highlights some of the conceptual developments in the interplay of hormones and their associated downstream events influencing tuber formation.
Highlights
BackgroundPotato is one of the most economically important noncereal food crops and an excellent stable food due to its high yield and great nutritive value
Transition from tuber dormancy to sprouting using hormone After harvesting, potato tubers are dormant and do not germinate after planting
Short conclusion: The present review focuses on the relative roles of hormones during various developmental stages with a view to recognize their mechanisms of function in potato tuber development
Summary
Potato is one of the most economically important noncereal food crops and an excellent stable food due to its high yield and great nutritive value. There are strong similarities between Arabidopsis and tomato in signaling pathways and the networks responsible for the control of potato growth and developmental stages, indicating conserved evolutionary processes across a wide spectrum of plants [4]. Some hormones possess synergistic and antagonistic roles in plant growth and developmental processes, acting as essential endogenous regulators in signaling pathways and subsequent responses [4]. GA stimulated stem elongation in sprouting, vegetative stage of mother tuber, stolon initiation, and stolon development in potato [2–11]. Auxin plays an important role in potato tuberization, in the processes of tuber initiation and growth. We have discussed the role of phytohormones in the context of their effects on diverse perspectives of growth and development and explain the pathways in which plant hormones regulate these responses, individually or in combination with other hormones. We highlighted the research context where more endeavors are required to improve our current insight on the role of plant hormones during tuber growth and development
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