A5032907292- Genetic Mapping and Diversity in Plants and Animals
- Rice Cultivation and Yield Improvement
- GABA and Rice Research
- Research in Cotton Cultivation
- Plant Molecular Biology Research
- Plant Disease Resistance and Genetics
- Plant Virus Research Studies
- Plant responses to water stress
- Seed Germination and Physiology
- Plant nutrient uptake and metabolism
- Plant and Fungal Interactions Research
- Plant Pathogenic Bacteria Studies
- Plant Reproductive Biology
- Plant and animal studies
- Chromosomal and Genetic Variations
- Plant Pathogens and Fungal Diseases
- Plant-Microbe Interactions and Immunity
- Plant Stress Responses and Tolerance
- Soybean genetics and cultivation
- Plant Gene Expression Analysis
- Genetics and Plant Breeding
- Plant Genetic and Mutation Studies
- Photosynthetic Processes and Mechanisms
- Plant pathogens and resistance mechanisms
- Allelopathy and phytotoxic interactions
Texas Tech University
2017-2025
International Rice Research Institute
2012-2023
Nagoya University
2012-2023
University of the Philippines Los Baños
2021
Japan International Cooperation Agency
2015
To investigate the involvement of phytohormones during rice microspore/pollen (MS/POL) development, endogenous levels IAA, gibberellins (GAs), cytokinins (CKs) and abscisic acid (ABA) in mature anther were analyzed. We also analyzed global expression profiles genes related to seven phytohormones, namely auxin, GAs, CKs, brassinosteroids, ethylene, ABA jasmonic acids, MS/POL tapetum (TAP) using a 44K microarray combined with laser microdissection technique (LM-array analysis). IAA GA4...
Abstract Under flooded conditions, the leaves and internodes of deepwater rice can elongate above water surface to capture oxygen prevent drowning. Our previous studies showed that three major quantitative trait loci ( QTL ) regulate deepwater‐dependent internode elongation in rice. In this study, we investigated age‐dependent We also relationship between phytohormone gibberellin GA by physiological genetic approach using a pyramiding line NIL ‐1 + 3 12). Deepwater did not show before sixth...
Significance This study investigates a previously unidentified cysteine-rich peptide (CRP). CRPs have diverse roles in plant growth and development, such as control of stomata density guidance pollen-tube elongation. Despite numerous studies on Arabidopsis thaliana , there are still many peptides with unknown function. We identify rice CRP named Regulator Awn Elongation 2 (RAE2) show that it is cleaved specifically the spikelet to promote awn demonstrate RAE2 was target selection during...
The level of fatty acid unsaturation in seeds is one the major determinants cold germination ability, particularly oilseeds. presence
The wild relatives of rice (Oryza sativa L.) are useful sources alleles that have evolved to adapt in diverse environments around the world. Oryza rufipogon, known progenitor cultivated rice, harbors genes been lost varieties through domestication or evolution. This makes O. rufipogon an ideal source value-added traits can be utilized improve existing cultivars. To explore potential as a genetic resource for improving sativa, 33 chromosome segment substitution lines (CSSLs) (W0106)...
The era of the green revolution has significantly improved rice yield productivity. However, with growing population and decreasing arable land, scientists must find new ways to improve Although hundreds yield-related QTLs were already mapped some them cloned, only a few utilized for actual systematic introgression breeding programs. In this study, major Grain Number 1a (Gn1a) Wealthy Farmer’s Panicle (WFP) introgressed stacked in selected NERICA cultivars by marker-assisted backcross...
Cotton is the world’s most important natural textile fiber and a significantly growing source of food stuff, oil feeds. Among 53 Gossypium species, only 4 are cultivated, with G. hirsutum barbadensecomprising over 90% total cotton cultivation area worldwide. The extensive use few closely related genotypes cotton, coupled widespread adoption transgenic cultivars, has greatly reduced genetic base crop. This uniformity makes highly vulnerable to emerging biotic abiotic challenges. Future...
The quantitative resistance gene pi21 from Sensho was introgressed to an indica breeding line IR63307-4B-13-2, a pyramiding IRBB4/5/13/21, and tropical japonica Kinandang Patong by marker-assisted backcrossing. A total of 192 improved lines at the BC4F3 BC4F4 generations were developed confirmed have introgression via genotyping using pi21-specific InDel marker. Thirteen randomly selected lines, representing all three genetic backgrounds, demonstrated against leaf blast composites in field...
Wide hybridization is an important plant breeding strategy that can be used to expand the available genetic variation in present-day crops towards for enhanced agronomic performance. The primary challenge wide presence of reproductive barriers and incompatibilities limit transfer desirable wild or distant alleles background cultivated species. Here we provide perspectives on possible role hybrid sterility gametocidal genes observed preferential introgression exotic germplasm rice. We argue...
A long awn is one of the distinct morphological features wild rice species. This organ thought to aid in seed dispersal and prevent predation by animals. Most cultivated varieties Oryza sativa glaberrima, however, have lost ability form awns. The causal genetic factors responsible for loss these two species remain largely unknown. Here, we evaluated three sets chromosome segment substitution lines (CSSLs) a common O. background (cv. Koshihikari) that harbor genomic fragments from nivara,...
Abstract Background Glabrousness is an important agricultural trait for the practical breeding of rice. In this study, depilous (dep), gene responsible glabrous leaves and glumes rice was identified by map-based cloning. Results The dep encodes a WUSCHEL-related homeobox 3B that fine-mapped to 22-kb region on short arm chromosome 5 using progenies derived from crosses between Koshihikari (pubescent) GLSL15, Oryza glaberrima segment substitution line (glabrous). Complementation tests...
DNA marker-assisted selection (MAS) has become an indispensable component of breeding. Single nucleotide polymorphisms (SNP) are the most frequent polymorphism in rice genome. However, SNP markers not readily employed MAS because limitations genotyping platforms. Here authors report a Golden Gate array that targets specific genes controlling yield-related traits and biotic stress resistance rice. As first step, genotypes were surveyed 31 parental varieties using Affymetrix Rice 44K...
Two species of rice have been independently domesticated from different ancestral wild in Asia and Africa. Comparison mutations that underlie phenotypic physiological alterations associated with domestication traits these gives insights into the history both regions. Asian cultivated rice, Oryza sativa, African glaberrima , modified improved for common beneficial humans, including erect plant architecture, nonshattering seeds, nonpigmented pericarp, lack awns. Independent orthologous genes...
Oryza sativa and O. glaberrima are the cultivated forms of rice in Asia Africa, respectively. While both possess important agricultural traits, genes that unique to either species can be used improve other. To explore genetic potential African as a resource for improvement sativa, 34 chromosome segment substitution lines background elite japonica cultivar Koshihikari were developed identify QTLs associated with 10 traits related grain yield, plant stature maturity. More than 90% entire...
Deepwater rice possesses internode elongation ability to avoid drowning under deepwater conditions. Previous studies identified three QTLs regulating on chromosomes 1, 3 and 12 using different populations. However, these only induce in response conditions from the 7-leaf stage not during early leaf stage. In this study, we detected two novel QTLs, qTIL2 qTIL4 at an F(2) population derived cross between NIL1-3-12 carrying T65 (O. sativa ssp. japonica) genetic background C9285 indica, rice)....
Gibberellin (GA) is a plant hormone that has important roles in numerous developmental phases. Rice plants known as deepwater rice respond to flooding by elongating their internodes avoid anoxia. Previous studies reported GA essential for internode elongation rice. Quantitative trait locus (QTL) analyses identified QTLs regulating response conditions. However, the interaction between and regulators of sensitivity unknown. In this study, we applied recombinant inbred lines T65 (non-deepwater...
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Abstract Oryza longistaminata , the African wild rice, can propagate vegetatively through rhizomes. Rhizomes elongate horizontally underground as sink organs, however, they undergo a developmental transition that shifts their growth to surface of ground become aerial stems. This particular stage is essential for establishment new ramets. While several determinants such abiotic stimuli and plant hormones have been reported key factors effecting in stem, cause this phenomenon rhizome remains...
Oryza latifolia is a tetraploid wild species with CCDD genome that has been reported to harbor resistance bacterial blight (BB), brown planthopper, and whitebacked planthopper. Aside from these traits, O. also being tapped as new source of lodging high biomass production. To explore the genetic potential novel resource for improvement existing sativa cultivars, 27 disomic derivatives monosomic alien addition lines (MAAL) were characterized chromosome segment introgressions evaluated yield...
Cotton is widely cultivated in temperate regions across the world and often constrained by a short planting window that bookended low, suboptimal temperatures. With growing interest early season planting, improvements cold germination ability of cotton will be necessary to ensure production stability planted crops. The importance saturation levels membrane storage lipids enhancing tolerance plants, as well improving seeds have been researched range plant species. While studies shown higher...
Chromosome segment substitution lines (CSSLs) are rich genetic resources that can be mined for novel, agriculturally useful loci or used directly as materials breeding. To date, a number of rice CSSLs have been developed by crossing cultivars with its wild relatives means to tap into the potential alleles in improvement. Oryza nivara is relative thought progenitor O. sativa spp. indica. In present study, 26 covers entire genome contiguous, overlapping segments genomic background japonica...