Front cover: Phaeodactylum tricornutum cells showing fluorescence of plastids (false green color). Images were taken on a Keyence BZ-X700 with a 100x oil immersion PlanApo NA 1.45 objective lens. The chlorophyll was imaged with a filter cube with excitation at 620/60 nm bandwidth and emission at 700/75 nm bandwidth. Image captured by Alisa Shaw, Colorado State University Fluorescence Microscopy/Image Analysis Center. (Broddrick et al., pp. 603–621)
PJ：西北农林报道一个调控ABA合成的转录因子
前期的研究显示一个来自小麦的bZIP transcription factor gene TaFD-Like2-1A (TaFDL2-1A)可以提高拟南芥对干旱胁迫的耐受性。本研究显示过表达TaFDL2-1A可以提高小麦对干旱的耐受性并提高对ABA的敏感度。
干旱胁迫条件下过表达TaFDL2-1A的小麦株系的气孔对干旱胁迫更加敏感，而且过表达株系中ABA的水平显著增高。
转录分析显示TaFDL2-1A可以直接结合到 TaRAB21s 和 TaNCED2s 启动子上的ACGT顺式作用元件上来激活它们的表达，从而提高小麦对ABA的敏感度。
此外过表达ACGT还可以提高TaSOD1 和TaGPx1-D的表达从而促进对旱胁迫条件下ROS的清除能力。
本研究揭示的由 TaFDL2-1A介导的小麦耐受干旱胁迫的分子机制如下：
原文：TaFDL2-1A confers drought stress tolerance by promoting ABA biosynthesis, ABA responses, and ROS scavenging in transgenic wheat
