Pollutant causes delayed flowering in plants
...his colleagues began their studies by exposing the seedlings of the mustard plant, scientific name Arabidopsis, to a chemical that produced nitric oxide. The researchers found that such exposure enhanced the vegetative growth of the plants and significantly delayed flowering in a dose-dependent manner. Arabido...Researchers ID chlorophyll-regulating gene
... first breath of air after emerging from the womb, seedlings must quickly convert protochlorophyll into chlorop...thaliana, a mustard plant, and compared the mutant seedlings with a control group of normal plants. They grew the seedlings in the dark to mimic conditions...Save the rainforest - eat a tree
...ach of the 22 net roofs. That meant a total of 880 seedlings were transplanted: 440 red clay seedlings transplanted onto white sand soil, and 440 white sand tree seedlings transplanted into red clay soil...Briggs takes to the molecular level Darwin's findings on plants sensing the direction of light
...t. Most casual observers have likely noticed that seedlings on a windowsill will grow toward the light. This p... detecting light. This light sensing system guides seedlings through the soil and has profound influences on their development during the critical stage of seedl...Significant strides in small regulatory RNA research in plants
...ew library of small RNAs isolated from Arabidopsis seedlings exposed to dehydration, salinity, cold stress, or the plant stress hormone abscisic acid. They identify 15 new miRNA families which include 26 new miRNAs corresponding to 34 loci, and show that some of these miRNAs are expressed in specific tissues a...Virginia Bioinformatics Institute researcher advances fight against sudden oak death disease
.... Sudden oak death has affected California redwood seedlings and sprouts, but not the trunks. However, it poses a large threat to Virginia oak trees and other Eastern Seaboard plant species that have proven highly susceptible to the pathogen in greenhouse tests. Tyler identified the Virginia highlands as a pot...Crop rotation may help wait out soil pathogen deadly to pumpkins
...lrabi, mustard and parsley. The 22 vegetable crop seedlings that became infected and developed symptoms of the disease in the study are: beet, carrot, eggplant, green bean, lima bean, radish, snow pea, spinach, Swiss-chard, tomato, turnip, onion, pepper and a long list of vine vegetables including pumpkin, ca...When plants need ants' help, bigger is better
...ersed far enough to reduce competition between the seedlings and their parent. The further the seeds are dispersed, the better chance the seedlings have of making it to adulthood. Such ant-plant mutualisms are common and include such plants as sacr...Carbon dioxide fertilization is neither boon nor bust
... lots of questions, including: Do the responses of seedlings and young trees predict those of large mature trees in a closed forest? Does the response diminish over time? Can increased carbon assimilation by the global forest prevent the continued increase in atmospheric carbon dioxide concentration? The long ...Signal chemical primes plants for pest attack
...nced undamaged plants in the area by studying corn seedlings and beet army worm, a caterpillar that eats corn l... tobacco and other plants. The researchers exposed seedlings to GLV for an hour or overnight. They then tested the undamaged plants by either mechanically damag...Armies of fighting fungi protect chocolate trees
... resistance. In those experiments, they grew cacao seedlings in conditions that prevented infections by endophytes. They next infected some leaves with endophytes alone, some with the major cacao pathogen Phytophthora, and some with both endophytes and Phytophthora. "We found that Phytophthora successfully inf...Traditional Christmas snack under threat
... place. Planting of viable seeds or nursery-grown seedlings could also increase the supply of young trees with... help maximise the chance of seeds germinating and seedlings surviving to become established juveniles. Although continued intensive harvesting is a concern, the...American black cherry tree overruns Europe by playing dirty
...out on field trips into the woods to pull the tree seedlings and saplings out." The research team examined the ... pots, soil was sterilized with heat. Black cherry seedlings were grown for two months. The researchers found that black cherry is sparsely distributed across In...Wolves are rebalancing Yellowstone ecosystem
...ne. Long-term elk browsing had been preventing any seedlings from getting taller." That pattern was common throughout the study area - lots of seedlings in combination with large cottonwood trees generally more than 70 years old, but little or nothing i......g the extent of shrub cover and whether or not oak seedlings can grow in this. If there are few rabbits, shrub ... can develop in an area grazed by cows and the oak seedlings can root in the shrubs because the shrubs protect the seedlings from the cows. If there are many rab...Studies probe rapid evolution of Chinese tallow trees
...Franklin, then in Europe, sent Chinese tallow tree seedlings to an associate in Georgia. Known for its heart-sh...r of Ecology and Evolutionary Biology, are growing seedlings from seeds collected from states across the southern U.S. Working with a large group of graduate and...Unraveling the genetics of fusiform rust
...reeding resistant families of trees by inoculating seedlings with bulk collections of fungal spores harvested from a broad geographical area. The resulting trees are resistant to fusiform rust in a general sense, but they are not immune to the disease. Seemingly resistant trees can be infected when exposed to ...Abnormal plant shows scientists path to plant, animal development
... when PKL has not turned them off. This results in seedlings that still have embryonic traits. The researchers believe they now can turn PKL on and off and that they know the chronology of steps needed to regulate genes that foster embryonic behavior. The researchers studied 8,000 Arabidopsis genes to determin...How plants get made in the shade
...rose from a screening that Cerdn was conducting of seedlings of Arabidopsis , a small flowering plant that is ...t showed an altered response to light. Among these seedlings was one mutant form that showed less response in terms of flowering to the light conditions that wou...... five generations -- from seed-producing plants to seedlings and more seed-producing plants, again and again -- and the desirable, stress-tolerance characteristics have held true. Compared with non-engineered rice plants that lack the trehalose-enhancement gene sequences, the transgenic rice plants are much mo...