Greenhouse cultivation boom
Greenhouse cultivation has been expanding rapidly in recent years. Commercial nanosatellite imagery and artificial intelligence techniques reveal 1.3 million hectares of greenhouse infrastructures in 2019 — a much larger number than previously estimated. This includes large-scale (61%) and small-scale (39%) greenhouse infrastructures. A close examination of the temporal development of the 65 largest greenhouse clusters (>1,500 ha) suggests an upsurge in greenhouse cultivation in the Global South since the 2000s, including a dramatic increase in China (which accounts for 60% of the global greenhouse coverage). Major greenhouse clusters in the Global North were predominantly established in the 1970s and 1980s, while clusters in the Global South emerged around the 1990s and 2000s — but have grown more rapidly since.
PJ:河北农大揭示调控小麦叶锈病抗性的新机制
由钙离子介导的Hypersensitive response-programmed cell death (HR-PCD) 被认为是调控小麦应答叶锈病的一种重要机制。本研究发现，在遭受叶锈病侵袭时tumor protein (TaTCTP)被诱导，这是一个以来钙离子的过程。抑制TaTCTP的表达显著的增大了侵袭部位死亡细胞的面积，而过表达TaTCTP则表现出显著的抗性表型。
在蛋白水平上， TaTCTP与 calcineurin B-like protein-interacting protein kinase 23 (TaCIPK23)在内质网相互作用，从而将TaTCTP磷酸化。 作者发现phospho-mimic TaTCTP mutant可以显著促进细胞死亡。沉默 TaCIPK23 或共沉默 TaCIPK23/TaTCTP的表型相似，说明二者在相同的通路中发挥作用。
小结：本研究揭示了TaTCTP介导的小麦对叶锈病的抗性调控机制。
原文：Translationally controlled tumor protein interacts with TaCIPK23 to positively regulate wheat resistance to Puccinia triticina
