TF380-Seasonal Succession In Phytoplankton 00:18 TF379-The Development of Social Complexity 00:20 TF378-Earth’s Age 00:22 TF-377-Feeding Strategies In The Ocean 00:23 TF阅读真题第466篇Water in the Desert 01:12 TF阅读真题第475篇Grasses of the Prairie 00:15 TF阅读真题第474篇Con...
►Tall fescue is extensively used as both a pasture grass and a turf or lawn grass. It is a hardy, vigorously growing grass but has been associated with various health problems in cattle and horses. Beef cattle often show reduced weight gains when grazing on tall fescue pastures, and dairy...
关于这种不良反应的报告导致对叶和茎组织的显微镜研究,揭示了嗜热Epichloe coenophala真菌的存在。对受感染牧场的调查发现,受感染植物的百分比与动物症状的严重程度呈正相关。人们发现草中的真菌能产生各种生物碱(有毒的含氮有机分子)。一种类型的生物碱(麦角生物碱)有助于牲畜的症状和减少放牧,而另一种类型(洛林生...
It is the colour of tall fescue, a grass that grows vigorously to produce stunning green swards and is exceptionally resistant to attack by insects and nematode worms. It also survives well in areas subject to drought and in soil depleted of nutrients.Dixon, Bernard...
Influence of fungal endophyte infection on nutrient element content of tall fescue Fungal endophytes infect several grass species. The fungus can alter the growth, and physiological and morphological characteristics of the infected plant... BR Vázquez‐De‐Aldana,B García‐Criado,I Zabalgogeazcoa,....
Some species of endophytic fungi, such asNeotyphodiumandEpichloë, which invade the seeds of grasses (e.g., ryegrass andfescue) and grow within theplant, grow not through extension of the hyphal tips but by intercalary growth, in which the hyphae attach to the growing cells of the plant...
toxicityNeotyphodiumendophytes along with the technology for their reinoculation resulted in the development of elite grass cultivars that are persistent, productive, and enhance animal performance, for example, Greenstone tetraploid hybrid ryegrass with Endosafe endophyte, and tall fescue cultivars with ...
Tall fescue Symptoms:Brown patchtypically forms irregular circles of thin, light brown grass. The patches range between a few inches to several feet in diameter. The turfgrass inside the circle’s center sometimes recovers, resulting in a donut-like shape. ...
Evidence for ancestral gene transfer between Epichloë fungal endophyte ancestors and their host grass species is described. From genomes of cool-season grasses (the Poeae tribe), two Epichloë-originated genes were identified through DNA sequence si
These bacteria colonize the root surface and interior cells, and intercellular spaces between the cortex and endodermis and in the xylem cells of grasses. Along with plant-available N, they may provide other plant growth-promoting compounds also. Mycorrhizal Associations Mycorrhizal fungi form a ...