Soil Phosphorus (P) deficiency is one of the major challenges to rice crop world-wide. Modern rice genotypes are highly P-responsive and rely on high input of P fertilizers. However, low P tolerant traditional cultivars and landraces have genetic potential to sustain well under low P. Identification of high resolution DNA polymorphisms (SNPs and InDels) in such contrasting genotypes is largely ...

Morpho-physiological response of 7 rice (Oryza sativa L.) varieties viz., Moroberekan, Co39, Azucena, Bala, IR64, Kalinga-III and Nipponbare was assessed under control and 100 mol m NaCl + 5 mol m CaCl2 stress in a flood bench system in greenhouse. Physiological and growth parameters were recorded after 21 or 42 days of salt stress. The statistical analysis revealed significant differences amon...

We identified four new family 19 chitinases in Oi:yza sativa L. cv. Nipponbare: one class I (OsChiald), two clftss II (OsChia2a nd OsChia2b), and Qne class IV (OsChia4a). OsChia2a resembled (about 60% identity) the catalytic domains of class I chitinases, but OsChia2b was almost identical (95% identity) to tbat of the class IV enzyme. OsChialc, OsChialcACBD (a deJetion of OsChialc lacking a chi...

We constructed 128 chromosome segment substitution lines (CSSLs), derived from a cross between indica rice (Oryza sativa L.) 9311 and japonica rice Nipponbare, to investigate the genetic mechanism of heterosis. Three photo-thermo-sensitive-genic male sterile lines (Guangzhan63-4s, 036s, and Lian99s) were selected to cross with each CSSL to produce testcross populations (TCs). Field experiments ...

The plant plasma membrane H+-ATPase (EC 3.6.1.3) had been shown to be essential for generating the membrane potential and concomitant electrochemical gradient, the means for translocating various solutes such as cations, anions, amino acids, and sugars across the plasma membrane by secondary transport systems (6, 7, 9, 10). Two cDNAs, OSA1 and OSA2, which encode H+-ATPase from rice cali (Oryza ...

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...