In order to estimate whether mastoparan 7 specifically activates plant heterotrimeric G proteins, comparisons were made between the responses of a rice normal cultivar and a rice dwarf mutant, Daikoku dl, which has a mutation in the gene of the a subunit of a heterotrimeric G protein, to mastoparan 7. First, we found that mastoparan 7 induced the activity of the a amylase via the heterotrimeric...

basis of their virulence against rice plants. Bui. Nat. Inst. Arg. Sci., C. 20, 67-82 (1966) 12) Mukoo, H., and Isaka, M.: Re-examination of some physiological characteristics of Xanthomonas oryzae (Uyeda et Ishiyama) Dowson. Ann.of Phytopath. Soc. Japan 29, 13-19 (1964) 13) Nishimura, Y., and Sakaguchi, S.: Heredity of resistance to bacterial leaf blight of rice. Preliminary report I. J. Genet...

The application of heterosis (hybrid vigor) has brought great success to plant breeding, particularly of hybrid rice, achieving significant yield increases. Attempts to explore the heterosis of inter-subspecific hybrids between indica and japonica rice, which result in even greater yield increases, have greatly increased in the past decades. However, because of the reduced seed setting rate in ...

The objective of this research was to evaluate the impact of organic sources (animal manures vs. plant residues at the rate of 10 t ha-1 each) on the productivity of hybrid rice (Oryza sativa L.) production under different levels of phosphorus (0, 30, 60, and 90 kg P ha-1) fertilization. Two separate field experiments were conducted. In experiment (1), impact of three animal manures sources (ca...

Although the discovery of aquaporins in plants has resulted in a paradigm shift in the understanding of plant water relations, the relationship between aquaporins and drought resistance still remains elusive. From an agronomic viewpoint, upland rice is traditionally considered as showing drought avoidance. In the investigation of different morphological and physiological responses of upland ric...

Pink-pigmented facultatively methylotrophic bacteria (PPFMs), persistent colonizers of plant leaf surfaces, belong to the genus Methylobacterium and are mostly transmitted through seeds. Plant growth-promoting activity of methylotrophic bacteria and their effects on disease suppression were evaluated on rice under greenhouse conditions. Rice seeds were inoculated with Methylobacterium sp. strai...

Cooperation involving Plant Growth-Promoting Rhizobacteria results in improvements of plant growth and health. While pathogenic and symbiotic interactions are known to induce transcriptional changes for genes related to plant defense and development, little is known about the impact of phytostimulating rhizobacteria on plant gene expression. This study aims at identifying genes significantly re...

background and objectives: early watergrass (echinochloa oryzoides) is considered as a new-introduced species and then as a potential invader. investigation of competitive traits of this species, in comparison with barnyardgrass (e. crus-galli), one of the most important weeds in rice fields of guilan province, would be useful to determine its spreading possibility as an aggressive weed. theref...