Genes from wild rice improve yield

Article Abstract:

The wild species, Oryza rufipogon, a weedy relative of cultivated rice, contains genes that can substantially increase the yield of rice. V/64 is a top yielding rice variety in China, derived from a cross between V20A and Ce64. The wild species O. rufipogon is crossed with V/64, V20B and Ce64 to produce BC(sub 2) test-cross families. The BC(sub 2) test-cross families outperform V/64 with respect to yield, grains per plant and 1,000-grain weight. The O. rufipogon alleles, yld1.1 and yld2.1, at marker loci RM5 on chromosome 1 and RG256 on chromosome 2, respectively are associated with enhanced yield.

Evaluation, Wild rice, Hybrid rice

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More genes versus environment

Article Abstract:

The incidence of multiple sclerosis (MS) in a family depend on genetic factors. The influence of environmental factors such as infection is unlikely. The sensitivity to MS genes depends on the genes that code the elements that can identify the T cells. There appears to be a relationship between the age at which the viral attack of the disease occurs and the age at which the attack on the central nervous system begins. The attack may take several years to appear after the infection, while a relapse of the disease may occur within a few days or weeks after the first attack.

Psychological aspects, Infection, Multiple sclerosis

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Light genes will out

Article Abstract:

Studies of the luminous bacteria found in anglerfishes (ceratioids) and flashlight fishes (anomalopids) indicate that these symbionts are related to Photobacterium and Vibrio. These results raise more questions on the molecular phylogeny and diversity of these bacterium as well as their mode of production. Their ability to survive in surrounding waters outside the host's body remains a question.

Research, Bioluminescence, Bacteria, Luminous, Luminous bacteria, Anglerfishes

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