PpGRAS12 acts as a positive regulator of meristem formation in Physcomitrium patens

Plant Molecular Biology - This study focused on the key regulatory function of Physcomitrium patens GRAS12 gene underlying an increasing plant complexity, an important step in plant...     

8,000 years of climate,vegetation, fire and land-use dynamics in the thermo-mediterranean vegetation belt of northern Sardinia (Italy)

Vegetation History and Archaeobotany - Knowledge about the vegetation history of Sardinia, the second largest island of the Mediterranean, is scanty. Here, we present a new sedimentary record...     

COPII collar defines the boundary between ER and ER exit site and does not coat cargo containers

COPII and COPI mediate the formation of membrane vesicles translocating in opposite directions within the secretory pathway. Live-cell and electron microscopy revealed a novel mode of function for COPII during cargo export from the ER. COPII is recruited to membranes defining the boundary between the ER and ER exit sites, facilitating selective cargo concentration. Using direct observation of living cells, we monitored cargo selection processes, accumulation, and fission of COPII-free ERES membranes. CRISPR/Cas12a tagging, the RUSH system, and pharmaceutical and genetic perturbations of ER-Golgi transport demonstrated that the COPII coat remains bound to the ER–ERES boundary during protein export. Manipulation of the cargo-binding domain in COPII Sec24B prohibits cargo accumulation in ERES. These findings suggest a role for COPII in selecting and concentrating exported cargo rather than coating Golgi-bound carriers. These findings transform our understanding of coat proteins’ role in ER-to-Golgi transport.     

The effect of temperature changes and K supply on the reproduction and growth of Bolboschoenus planiculmis

温度变化和钾添加对扁秆藨草生长及繁殖的影响 人类活动导致的气候变暖和农业面源污染已被认为是影响湿地植物生长和繁殖的重要因素。为了预 测和缓解这些人类活动的影响,研究沼泽植物如何响应这些环境变化具有重要意义。本研究选取在欧亚 大陆广泛分布的莎草科球茎植物扁秆藨草(Bolboschoenus planiculmis)为研究对象,考察气温变化(恒温： 15、20、25 °C及交替温度：20/10和30/15 °C)和钾添加(0、1、3、9 和18 mmol/L)对其生长和繁殖性状 的影响。研究结果表明,高的恒温(20、25 °C)比高的交替温度(30/15 °C)更有利于扁秆藨草球茎的形成, 而地上生物量和株高一般在较高温度下(30/15、25 °C)达到最大值。扁秆藨草的繁殖和生长性状均与施钾量 呈驼峰型关系,最适施钾量在1–3 mmol/L K。高恒温效应和最适钾浓度的交互作用对繁殖性状的促进作 用最大,但是,较高的温度(30/15和25 °C)和0–9 mmol/L的钾浓度只促进了生长性状的生长。综上所述, 扁秆藨草的种群优势度可能受益于全球变暖和额外的钾添加。     

Characterization of the PGK2 Associated Microsatellite S0719 on SSC7 Suitable for Parentage and QTL Diagnosis

We isolated and characterized the highly polymorphic tetra-nucleotide microsatellite S0719 on SSC7q14-q15 adjacent to the porcine testis-specific phosphoglycerate kinase 2 (PGK2) gene and assigned it to the USDA-MARC linkage map on SSC7 position 77.5 cM closely linked to markers SW859 (76.3 cM) and SWR2036 (79.0 cM). In a panel of 344 individuals representing 11 pig breeds (European, Chinese, and North American), a total of 32 alleles were observed, and the overall breeds' calculated PIC (polymorphism information content), H_E (heterozygosity), and N_E (effective allele number) were 0.94, 0.94, and 16.41. Breed-specific PIC and H_E ranged from 0.66 to 0.87, whereas N_E was as low as 2.95 and as high as 7.96. Considering the high allelic variation of S0719 within and among pig breeds (79% of the genotyped animals were heterozygous), the marker is useful for individual animal identification and parentage determination. Finally, S0719 is also a valuable STS marker for fine-mapping QTL on SSC7 as position 77.5 cM is located in 25 QTL intervals (http://www.animalgenome.org/QTLdb/).