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The expression of a lipid transfer protein (LTP) gene is regulated in Oryza sativa roots in response to colonization by the mycorrhizal fungus Glomus mosseae. Transcript levels increased when the fungus forms appressoria and penetrates the root epidermis and decreased at the onset of the
Association of molecular markers namely isozymes and simple sequence repeats (SSRs) and various biochemical markers to leaffolder (Cnaphalocrocis medinalis G., a predominant insect pest of rice) resistance were studied in rice (Oryza sativa L.). Recombinant inbred lines (RILs) of F8 generation
Phenylalanine ammonia-lyase (PAL) is an important enzyme that links primary metabolism to secondary metabolism. Its efficiency is often a critical factor that affects the overall flux of a related metabolic pathway, the titer of the final products, and the efficacy of PAL-based therapies. Thus, PAL
Allelopathy in rice (Oryza sativa) is a chemically induced response that is elevated by the exogenous application of chemical compounds and barnyard grass root exudates. An in-depth understanding of the response mechanisms of rice to chemical induction is necessary for the Seedlings of 17 rice (Oryza sativa L.) cultivars were classified on the basis of anthocyanin pigmentation into three groups: an acyanic group with 9 cultivars, a moderately cyanic group with 5 cultivars, and a cyanic group with 3 cultivars. Seedlings of the cyanic group were deep purple in color,
Suspension cultured cells of a blast-resistant rice genotype (Oryza sativa L. cv. Gigante Vercelli) were treated with cell wall hydrolysates prepared from the fungal pathogen Magnaporthe oryzae. As a consequence, a complex pattern of phenylalanine ammonia lyase time course specific activity levels
In order to estimate whether cytosolic glutamine synthetase (GS1; EC 6.3.1.2) is partly coupled to the reaction of phenylalanine ammonia-lyase (PAL; EC 4.3.1.5) in developing organs of rice (Oryza sativa L.), we compared the expression pattern of transcripts and proteins for GS1 and PAL in the
Both polysaccharide-linked hydroxycinnamoyl esters (PHEs) and lignin are biosynthesized via the phenylpropanoid pathway. In the abnormal internode parenchyma of the rice (Oryza sativa L.) mutant Fukei 71, which has a defective recessive gene (d50), the biosynthesis of lignin and PHEs differs. . The
Phenylpropanoids, flavonoids and plant growth regulators in rice (Oryza sativa) variety (UPR 1823) inoculated with different cyanobacterial strains namely Anabaena oryzae, Anabaena doliolum, Phormidium fragile, Calothrix geitonos, Hapalosiphon intricatus, Aulosira fertilissima, Tolypothrix tenuis,
Phenylalanine ammonia-lyase (PAL) genomic sequences were isolated from a rice (Oryza sativa L.) genomic library using a PCR-amplified rice PAL DNA fragment as a probe. There is a small family of PAL genes in the rice genome. The nucleotide sequence of one PAL gene, ZB8, was determined. The ZB8 gene
Iron (Fe) as a micronutrients and silicon (Si) as a cell wall element are important in plant cell wall extension and integrity. While the interaction of exogenous Si and excess Fe on root cell wall modifications is known, the effects of these nutritional parameters on the spatial changes in the
Most agronomically important traits, including resistance against pathogens, are governed by quantitative trait loci (QTL). QTL-mediated resistance shows promise of being effective and long-lasting against diverse pathogens. Identification of genes controlling QTL-based disease resistance
Brown planthopper (BPH) is one of the most destructive insects affecting rice (Oryza sativa L.) production. Phenylalanine ammonia-lyase (PAL) is a key enzyme involved in plant defense against pathogens, but the role of PAL in insect resistance is still poorly understood. Here we show that
Differential expression of the key genes controlling phenolic metabolism in allelopathic and non-allelopathic rice accessions was investigated under two nitrogen supply levels (lower and normal) using fluorescence quantitative-polymerase chain reaction (FQ-PCR) (Figs.2, 3). The results indicated
A novel pathogen defense strategy by thiamine priming was evaluated for its efficacy against sheath blight pathogen, Rhizoctonia solani AG-1A, of rice and compared with that of systemic fungicide, carbendazim (BCM). Seeds of semidwarf, high yielding, basmati rice variety Vasumati were treated with