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Tag: "tomato" at biology news

Whiteflies and plant viruses can help each other to speed up biological invasion

...lant viruses called begomoviruses on crops such as tomato and tobacco. These viruses are transmitted by this whitefly. In many countries and regions, including China, the outbreaks of the B whitefly have also seen the gradual disappearance of some native whitefly biotypes. Many scientists around the worl...

Scientists genetically engineer tomatoes with enhanced folate content

...ersity of Florida at Gainesville who developed the tomato along with colleague Jesse Gregory. "Now that we've shown it works in tomatoes, we can work on applying it to cereals and crops for less developed countries where folate deficiencies are a very serious problem." Folate is one of the most vital nut...

Research on grey mould offers possible breakthrough in tomato cultivation

...rowers are likely to soon be able to cultivate new tomato varieties without having to use pesticides against... Finkers designed highly efficient methods whereby tomato varieties can be resistant to grey mould. The leading company De Ruiter Seeds is already applying th...

Unique tomatoes tops in disease-fighting antioxidants

...vascular disease and macular degeneration. "The tomato is a wonderful biosynthetic factory for carotenoid.... The researchers made spaghetti sauce from two tomato varieties ?tangerine tomatoes, which get their name from their orange skin and are high in cis-lycop...

Parasitic plants sniff out hosts

...ifornia each year, a 20 percent infestation of the tomato crop reduces yield by 25 percent and causes a loss...ater vial at the center of a filter paper disk. A tomato plant was placed near the edge of the disk and the dodder plant was allowed to grow and attempt to l...

UC San Diego biologists solve plant growth hormone enigma

...ncrease the effort and waste involved in producing tomato sauce. "This study is a real tour de force," commented Martin Yanofsky, a professor of biology at UCSD, who was not one of the authors of the study. "People have been trying to figure out auxin for decades. By carefully inactivating the genes for ...

Gene thwarts some pathogens, gives access to others, could save crops

...rop annually and about 25 percent to 30 percent of tomato and strawberry crops in some seasons. It also infects many other fruits, vegetables, bulbs and a variety of flowers, including petunias, geraniums and chrysanthemums. Cool, humid weather fosters the fungus, which is spread by spores. The mold can app...

Tastier tomatoes in the future?

...tic make-up of the hybrid. The results could allow tomato growers to use wild tomatoes to produce cultured t...aste and health value of the fruits. To cultivate tomato strains with particular characteristics, researchers have to increase the genetic diversity of cultu...

Anyway you slice it, tomatoes cut through drought with new gene

New tomato research has its roots in yielding more food to fe...he National Academy of Sciences. The team made tomato plants over-express the gene, AVP1, which resulted in stronger, larger root systems and that resulte...

Bacterial protein mimics host to cripple defenses

...anges rendered Pseudomonas harmless to susceptible tomato plants, and made the purified protein inactive. AvrPtoB's function is remarkable not only because its amino acid sequence is so different from other ubiquitin ligases, but also because bacteria don't use ubiquitin to recycle their own proteins. "An...

Study: Plants use dual defense system to fight pathogens

...domonas syringae, a bacterium that usually infects tomato crops. Both Arabidopsis, a plant of the mustard family, and P. syringae are models that researchers commonly use to conduct basic plant research. One of the immune pathways that interested the researchers recognizes what they call pathogen-associate...

Researchers find gene that may be at root of potato blight

...ting disease that can destroy fields of potato and tomato plants. Plant pathogens contain a diverse set of s... strategies for managing late blight in potato and tomato crops are unsustainable and costly. In the United States and other developed countries, the chronic ...

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