Fig. 1
From: LSD 4.0: an improved database for comparative studies of leaf senescence
Comparison of entries changes in four versions of LSD and functional assessment of SAG. A-C Histogram illuminates the comparisons of gene number (A), mutant number (B) and species number (C) among four versions of the database. D-E WRKY26 is a positive regulator of leaf senescence. Histochemical analysis of the rosette leaves of 28-d-old transgenic plants of WRKY26pro-GUS/Col-0 (#1 and #2). The numbers were labeled according to the order of appearance of the rosette leaves. The larger the number, the younger the leaf. Bar, 1 cm (D). Inducible overexpression of WRKY26 leads to premature leaf senescence in 40-day-old pER8-WRKY26/Col-0 transgenic plants (#1 and #2) after spraying with 50 μM β-estradiol for 15 days. Red arrows indicate leaves that have turned yellow and senescent. Bar, 1 cm (E). F-I Identification and functional analysis of SAGs in Kalanchoe serrata. Identification of 987 SAGs (F) and 857 SDGs (G) in Kalanchoe serrata Plants. S1-S6, six different developmental stages. Expression level of KsNAP at different stage (H). Inducible overexpression of KsNAP promotes leaf senescence in 28-day-old Arabidopsis plants after spraying with 50 μM β-estradiol. Red arrows indicate leaves that have turned yellow and senescent. Bar, 1 cm (I). J The multi-layered controls of leaf senescence. The onset and progression of leaf senescence is finely controlled by multiple layers of regulation, mainly including chromatin-mediated, transcriptional, post-transcriptional, translational and post-translational levels