The NAC Transcription Factor SlNAP2 Regulates Leaf Senescence and Fruit Yield in Tomato

Plant Physiology
Xuemin MaSalma Balazadeh

Abstract

Leaf senescence is an essential physiological process in plants that supports the recycling of nitrogen and other nutrients to support the growth of developing organs, including young leaves, seeds, and fruits. Thus, the regulation of senescence is crucial for evolutionary success in wild populations and for increasing yield in crops. Here, we describe the influence of a NAC transcription factor, SlNAP2 (Solanum lycopersicum NAC-like, activated by Apetala3/Pistillata), that controls both leaf senescence and fruit yield in tomato (S. lycopersicum). SlNAP2 expression increases during age-dependent and dark-induced leaf senescence. We demonstrate that SlNAP2 activates SlSAG113 (S. lycopersicum SENESCENCE-ASSOCIATED GENE113), a homolog of Arabidopsis (Arabidopsis thaliana) SAG113, chlorophyll degradation genes such as SlSGR1 (S. lycopersicum senescence-inducible chloroplast stay-green protein 1) and SlPAO (S. lycopersicum pheide a oxygenase), and other downstream targets by directly binding to their promoters, thereby promoting leaf senescence. Furthermore, SlNAP2 directly controls the expression of genes important for abscisic acid (ABA) biosynthesis, S. lycopersicum 9-cis-epoxycarotenoid dioxygenase 1 (SlNCED1); transport, S. lyc...Continue Reading

Citations

Apr 20, 2019·Journal of Experimental Botany·Xuemin MaBernd Mueller-Roeber
Jun 4, 2019·International Journal of Molecular Sciences·Ziguo ZhuBo Li
Sep 12, 2019·International Journal of Molecular Sciences·Taehoon KimNam-Chon Paek
Mar 13, 2020·Plant Biotechnology Journal·Sonia BalyanSaloni Mathur
Mar 21, 2020·International Journal of Molecular Sciences·Natalia WojciechowskaAgnieszka Bagniewska-Zadworna
Jan 13, 2019·International Journal of Molecular Sciences·Muhammad Asad Ullah AsadFangmin Cheng
Jul 6, 2020·Scientific Reports·Sara ForlaniChiara Mizzotti
Feb 12, 2021·Plant Science : an International Journal of Experimental Plant Biology·Jinlan FangMuqing Zhang
Feb 27, 2021·Plant Molecular Biology·XiaoHong KouZhaoHui Xue
May 29, 2021·BMC Plant Biology·Sara ForlaniSimona Masiero
Jun 3, 2021·International Journal of Molecular Sciences·Hailiang ChengGuoli Song
Jun 8, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Coenraad R van BeekChristell van der Vyver
Apr 30, 2021·Plant Physiology·Martyna BrodaOlivier Van Aken
Jun 17, 2021·The New Phytologist·Olivia J M Kelly, Andrew C Allan
Jun 20, 2021·Biochemical and Biophysical Research Communications·Tong HanAying Zhang
Aug 21, 2021·The Plant Journal : for Cell and Molecular Biology·Yin ZhangXiuxin Deng

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