Physiological and molecular responses to high, chilling, and freezing temperature in plant growth and production: consequences and mitigation possibilities
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer International Publishing
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Temperature is the main factor that determines the geographical distribution of plants both in the context of altitudinal and latitudinal gradients. Temperature is a primary physical factor affecting the rate of plant growth and development in all the species across different regimes. Prolonged extreme temperatures, either temperatures below and above certain thresholds during critical periods of developmental stages, have severe consequences on plant productivity and grain quality. In addition to flowering time, low temperature (LT) causes short hypocotyls and compact rosettes, and higher temperature causes lower viability of pollens and anthers, thereby causing severe economic losses. It alters the plant metabolism, and this short-/long-term modulation after exposure to high temperature (HT), low temperature (LT), and freezing temperature (FT) affects the important macromolecules (DNAs, protein) and super molecules (membranes, chromosomes). To combat the adversities of extreme temperature antioxidants activities, photosynthetic assimilate transport and heat shock proteins (HSPs) activation causes direct and indirect acclimation, thus protecting plants and enhancing plant growth and productivity. The responses of plants under temperature fluctuations have been widely investigated; however, in-depth studies related to adaptive responses of the plant at the molecular and physiological level are still lacking. Plants acquire resistance to every single degree increase/decrease in temperature by modulating genetic makeup and underlying key physiological processes. This chapter aims to document parallel-in-time changes during extreme temperature, and exploring new advancement in biotechnological tools to enhance plant tolerance at the genomic level, which could lead to the generation of new resistant/tolerant varieties with sustainable yield and production. Therefore, in this chapter, we underline and summarize the recent progress in the physiological, biochemical, and molecular responses as tolerance mechanisms under HT, LT, and FT. Moreover, some mitigation approaches, such as QTLs, GWAS, MAS, PGRs, and plant leaf extracts, are also discussed in detail. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2021. All rights reserved.
Açıklama
Anahtar Kelimeler
Abiotic stress, Antioxidant enzymes, Biotechnology, Breeding, Chilling stress, GWAS, Plant growth regulators, QTL, Temperature, Zero hunger
Kaynak
Harsh Environment and Plant Resilience: Molecular and Functional Aspects
WoS Q Değeri
Scopus Q Değeri
N/A
