Journal Club

[Nature. 2020 Mar;579:561-566] pollen tube가 자라서 ovule에 수정하는 과정의 메커니즘을 밝힌 논문으로 세포 밖의 Pectin의 변화와 NO 및 receptor like kinase signaling 간의 관계를 잘 규명하였습니다. 두 세포의 contact 과정에서 일어나는 세포 바깥의 일과 세포 내부의 신호전달 과정의 연결고리를 이해하는데 도움이 될 것 같습니다.

[Plants (Basel). 2020 May; 9(5): 574] Here, we provide an overview of the knowledge available regarding the molecular mechanisms involved in and discuss how mechanoperception and signal transduction may contribute to plant CWI maintenance.

[Trends Plant Sci 2020 Jun;S1360-1385(20)30189-8] How the plant cell wall expands and forms shapes is a long-standing mystery. A recent study shows for the first time that the expansion of pectin homogalacturonan nanofilaments drives morphogenesis without turgor pressure in plant epidermal cells.

[Science 2020 Feb; 367:1003-1007] Haas et al. now show that the extracellular cell wall can actively shape the cell it contains without relying on turgor pressure.

[Science. 2020 May; 368:881-884] Bumble bee workers facing pollen scarcity damage leaves of flowerless plants and thereby accelerate flower production.

[Science. 2020 Jan;367:431-435] The precursor of a signaling peptide is made in the embryo and transferred to the endosperm, where it is processed into an active form. The activated peptide diffuses back into the embryo to activate receptor-like kinases that drive cuticle development. Serve and return continues until all leaks in the cuticle are filled in and the peptide can no longer cross the barrier.

[Curr Biol. 2020 Jun;S0960-9822(20)30654-0] • A cell swelling assay in Arabidopsis thaliana seedlings was developed • Cell swelling induced multiple responses, including programmed cell death (PCD) • The mechanosensitive ion channel MSL10 potentiated all of these responses • A phosphomimetic MSL10 variant was unable to potentiate cell swelling-induced PCD