Geldhof Batist, Pattyn Jolien, Van de Poel Bram
Molecular Plant Hormone Physiology Lab, Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Leuven, Belgium.
KU Leuven Plant Institute (LPI), KU Leuven, Leuven, Belgium.
Front Plant Sci. 2023 May 31;14:1178778. doi: 10.3389/fpls.2023.1178778. eCollection 2023.
In tomato, downward leaf bending is a morphological adaptation towards waterlogging, which has been shown to induce a range of metabolic and hormonal changes. This kind of functional trait is often the result of a complex interplay of regulatory processes starting at the gene level, gated through a plethora of signaling cascades and modulated by environmental cues. Through phenotypical screening of a population of 54 tomato accessions in a Genome Wide Association Study (GWAS), we have identified target genes potentially involved in plant growth and survival during waterlogging and subsequent recovery. Changes in both plant growth rate and epinastic descriptors revealed several associations to genes possibly supporting metabolic activity in low oxygen conditions in the root zone. In addition to this general reprogramming, some of the targets were specifically associated to leaf angle dynamics, indicating these genes might play a role in the induction, maintenance or recovery of differential petiole elongation in tomato during waterlogging.
在番茄中，叶片向下弯曲是对涝害的一种形态适应，已证明这种适应会引发一系列代谢和激素变化。这种功能性状通常是从基因水平开始的一系列调控过程复杂相互作用的结果，这些调控过程通过大量信号级联传导，并受到环境线索的调节。通过在全基因组关联研究（GWAS）中对54个番茄种质群体进行表型筛选，我们确定了可能参与番茄在涝害及后续恢复过程中植物生长和存活的目标基因。植物生长速率和偏上性描述符的变化揭示了与可能支持根区低氧条件下代谢活动的基因的若干关联。除了这种普遍的重编程外，一些目标基因还与叶角动态变化特别相关，这表明这些基因可能在番茄涝害期间差异叶柄伸长的诱导、维持或恢复中发挥作用。
