Scholarlink

Sunlight is indispensable for the photosynthesis of plants. Ultraviolet (UV) light is an integral part of sunlight. Due to the diminution of stratospheric ozone, UVB (280–315 nm) light is reaching the Earth’s surface and damaging the crucial components of cells such as membrane lipids, nucleic acid, and proteins, producing reactive oxygen species (ROS) and hampering the photosynthesis process. There is also a substantial alteration in the growth cum development of plants due to changes at the molecular, cytological, and morphological strata by the UVB light. Plants have managed to develop various defense mechanisms to counter UVB stress, which include the accumulation of secondary metabolites (flavonoids and phenolic compounds), generation of antioxidant factors (enzymes like superoxide dismutase (SOD) and catalase (CAT)), quick repairing of DNA (photorepair and dark repair), and signal transduction pathways (UV response locus 8 (UVR8)).

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Ultraviolet Defense Mechanisms in Higher Plants Against Environmental Stress

  • 章节

  • 发表日期：

    2026年

查看全文
  • Sayon Mukherjee,
  • Sourav Das,
  • Gorantla Prathap Reddy,
  • Dibyajyoti Panda,
  • Partha Mondal,
  • Sabyasachi Koley,
  • Madhurya Ray,
  • Soumen Chakraborty,
  • Debdut Manna,
  • Abhik Patra

摘要

Sunlight is indispensable for the photosynthesis of plants. Ultraviolet (UV) light is an integral part of sunlight. Due to the diminution of stratospheric ozone, UVB (280–315 nm) light is reaching the Earth’s surface and damaging the crucial components of cells such as membrane lipids, nucleic acid, and proteins, producing reactive oxygen species (ROS) and hampering the photosynthesis process. There is also a substantial alteration in the growth cum development of plants due to changes at the molecular, cytological, and morphological strata by the UVB light. Plants have managed to develop various defense mechanisms to counter UVB stress, which include the accumulation of secondary metabolites (flavonoids and phenolic compounds), generation of antioxidant factors (enzymes like superoxide dismutase (SOD) and catalase (CAT)), quick repairing of DNA (photorepair and dark repair), and signal transduction pathways (UV response locus 8 (UVR8)).