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[前沿资讯] 河北新发地:让京津冀“菜篮子”物丰质优 进入全文

农业农村部

  夏日时节,果蔬飘香。笔者走进位于高碑店市的河北新发地市场,只见一辆辆满载着全国各地特色果蔬的货车进进出出,前来采购的客商络绎不绝,整个场景忙碌而有序。

[前沿资讯] 北京市专家找到西瓜变甜关键基因 进入全文

基因农业

北京市农科院蔬菜中心许勇研究员团队近日在植物学国际知名期刊《新植物学家》(New Phytologist)在线发表最新论文,揭示了新型糖转运蛋白ClVST1是调节西瓜果实糖分卸载的关键因子,从分子层面揭示了西瓜变甜的秘密,为选育高品质西瓜提供了有力支持。  

[学术文献] Low blue light enhances phototropism by releasing cryptochrome 1-mediated inhibition of PIF4 expression 进入全文

Plant Physiology

Shade-avoiding plants, including Arabidopsis (Arabidopsis thaliana), display a number of growth responses, such as elongation of stem-like structures and repositioning of leaves, elicited by shade cues, including a reduction in the blue and red portions of the solar spectrum and a low red to far-red ratio. Shade also promotes phototropism of de-etiolated seedlings through repression of phytochrome B (phyB), presumably to enhance capture of unfiltered sunlight. Here we show that both low blue light and a low red to far-red light ratio are required to rapidly enhance phototropism in Arabidopsis seedlings. However, prolonged low blue light treatments are sufficient to promote phototropism through reduced cryptochrome 1 (cry1) activation. The enhanced phototropic response of cry1 mutants in the lab and in response to natural canopies depends on PHYTOCHROME INTERACTING FACTORs (PIFs). In favorable light conditions, cry1 limits the expression of PIF4, while in low blue light PIF4 expression increases, which contributes to phototropic enhancement. The analysis of quantitative DII-Venus, an auxin signaling reporter, indicates that low blue light leads to enhanced auxin signaling in the hypocotyl and, upon phototropic stimulation, a steeper auxin signaling gradient across the hypocotyl. We conclude that phototropic enhancement by canopy shade results from the combined activities of phytochrome B and cry1 that converge on PIF regulation.

[前沿资讯] 社区生鲜菜摊连锁将现沪上 30分钟买菜圈进一步缩短 进入全文

腾讯网

疫情之后,很多家庭主妇又开始恢复了买菜的习惯,但是他们的买菜习惯和之前有了变化:头一天晚上在网上付好菜钱,第2天在小区门口就能拿到前一天预定的各种新鲜的蔬菜水果。这就是出现在上海的又一种社区生鲜销售新模式:社区生鲜菜摊。社区生鲜连锁平台在各个社区内摆菜摊,每周在各个小区里巡回设摊,通过“线上预定+现场销售”的方式,把新鲜蔬菜、时令水果、肉蛋禽类和海鲜水产等送到居民家门口。

[前沿资讯] 天津市蓟州区产业帮扶开创新生活 科技大棚“种出”农民增收路 进入全文

中国设施园艺信息网

      在蓟州区出头岭镇官场村,一片现代的农业科技大棚格外醒目,这就是蓟州区的特色帮扶项目双河湾农业科技食用菌种植基地。记者日前来到基地时,村民刘海军正在大棚里培植菌棒。  

[前沿资讯] Cell重要成果:100个西红柿,有100个不同的DNA秘密 进入全文

基因农业

当普利策奖和格莱美奖得主Kendrick Lamar说出“I got millions, I got riches buildin' in my DNA”时,他肯定没有想到不起眼的西红柿的DNA有多么多变。最新一项研究揭示了100个西红柿品种中超过23万个DNA差异,这将使育种者和科学家能够设计出更大,更多汁,更有商业价值的植物。  

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