Begin | 10 | Description | In chs1-1 and chs1-2; Increased leaves sensitivity to chilling stress in an EDS1- and PAD4-dependent manner, killed by several days of exposure to temperatures below 18 degrees Celsius. Alterations in photosynthetic complexes, chloroplast ultrastructure, and thylakoid membrane integrity and lipid composition precede leaf cell death. Leaf chlorosis and electrolyte leakage after exposure to chilling temperatures associated with abnormal steryl-esters accumulation and reduced sterols levels. Chilling leads to xanthophyll cycle activation and accumulation of tocopherol. Activation of immune responses by chilling; increased salicylic acid (SA) and hydrogen peroxide H(2)O(2) production, extensive cell death and pathogenesis-related (PR) genes expression at 13 degrees Celsius. Massive necrotic response to virulent Pseudomonas syringae pv. tomato infection, but normal bacterial proliferation. Increased permeability to boric acid. |
End | 10 | Type | mutagenesis site |