Publications of NIPGR Scientists

Permanent URI for this communityhttps://ndkr-library.nipgr.ac.in/handle/123456789/1

Browse

Author: search.filters.author.Laxmi, AshveryaHas files: No

Search Results

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Light at the end of the tunnel: integrating signaling pathways in the coordination of lateral root development
    (Portland Press, 2024) Rawat, Sanjay Singh; Laxmi, Ashverya
    Root system architecture (RSA) encompasses a range of physical root attributes, including the lateral roots (LRs), root hairs and adventitious roots, in addition to the primary or main root. This overall structure is a crucial trait for efficient water and mineral capture alongside providing anchorage to the plant in the soil and is vital for plant productivity and fitness. RSA dynamics are dependent upon various environmental cues such as light, soil pH, water, mineral nutrition and the belowground microbiome. Among these factors, light signaling through HY5 significantly influences the flexibility of RSA by controlling different signaling pathways that converge at photoreceptors-mediated signaling, also present in the 'hidden half'. Furthermore, several phytohormones also drive the formation and emergence of LRs and are critical to harmonize intra and extracellular stimuli in this regard. This review endeavors to elucidate the impact of these interactions on RSA, with particular emphasis on LR development and to enhance our understanding of the fundamental mechanisms governing the light-regulation of LR growth and physiology.
  • No Thumbnail Available
    Item
    Understanding the role of phytohormones in governing heat, cold, and freezing stress response
    (Elsevier B.V., 2023) Sharma, Mohan; Saksena, Harshita B.; Botta, Halidev Krishna; Laxmi, Ashverya
    Plants are exposed to rapid fluctuations in the environmental temperature and respond differently to temperature stress through fine-tuning genetic, biochemical, and physiological changes. Plants utilize several signaling pathways including stress and phytohormone signalings to cope with high and low temperature stresses. Emerging studies have documented the role of growth and development related phytohormones, such as auxin, cytokinin, brassinosteroids, gibberellic acid, and strigolactones, in temperature stress responses. Apart from functioning in biotic stress, salicylic acid and jasmonic acid participate in alleviating temperature stress. Abscisic acid and ethylene have also been reported to be major players in regulating abiotic stresses. Changes in global temperature in recent years have drastically affected the crop productivity. Therefore manipulation of certain factors in the stress and phytohormone signaling pathways can lead to the development of crops tolerant to severe temperature stresses, thereby minimizing yield loss during harsh climatic conditions. In this chapter, we shed light on how different hormone signaling pathways facilitate plants to adapt under stressful temperatures, thereby providing them with better stress resilience and survival potential.
  • No Thumbnail Available
    Item
    Deciphering the physiological and molecular functions of phytohormones
    (Elsevier B.V., 2023) Sharma, Manvi; Laxmi, Ashverya
    Plants rely on a diverse set of small molecules called phytohormones for growth, development, and adaptability. Since the discovery of auxin, hormones have been at the frontier of plant biology. Classically, hormone functions and responses were studied using synthetic hormones and analogs. However, the advent of technology, multidisciplinary approaches, and the genome sequencing of the model system of Arabidopsis and rice has dramatically increased our understanding of physiological and molecular mechanisms driving plant hormone actions. In this chapter, we talk about how independent or combined molecular action of phytohormones such as with their signaling components and regulators leads to changes in plant physiology to regulate multiple aspects of plant development, defense, and adaptation. We envisage that such detailed knowledge will allow a far greater understanding of the complex dynamics underlying plant hormone action.
  • No Thumbnail Available
    Item
    Cross-talk between brassinosteroids and other phytohormones: biological functions and molecular mechanism
    (Elsevier B.V., 2022) Gupta, Aditi; Singh, Manjul; Singh, Dhriti; Laxmi, Ashverya
    To maintain optimal growth and survival, plants balance complex developmental processes while simultaneously sensing and responding to both endogenous physiological factors and changes in their surroundings. Phytohormones are an important class of compounds, which regulate various aspects of plant development and responses to adverse environmental conditions. With the signaling pathways well worked out for most of the hormones, it is evident that these signaling pathways interact in a complex network to coordinate such processes. Besides the five established classical groups of phytohormones, brassinosteroids (BRs) have emerged as prominent phytohormones in recent times. BRs are not only strong modulators of cellular division, cellular elongation, and cellular differentiation across plant tissues but also they make a significant contribution in improving adaptation to various stresses. This chapter summarizes mechanisms regulating production, homeostasis, signaling of BR and their interconnections with different plant hormones to control plant growth and adaptation.