Food security is a global concern and substantial yield increases in crops are required to feed the growing world population. Mutagenesis is an important tool in crop improvement and is free of the regulatory restrictions imposed on genetically modified organisms. Targeting Induced Local Lesions in Genomes (TILLING), which combines traditional chemical mutagenesis with high‐throughput genome�…
Cell-suspension cultures (Zea mays L.,Black Mexican sweet corn) habituated to 6-dichlorobenzonitrile (DCB) survive with reduced cellulose owing to hemicellulose network modification. We aimed to define the hemicellulose metabolism modifications in DCB-habituated maize cells showing a mild reduction in cellulose at different stages in the culture cycle. Using pulse-chase radiolabeling, we fed ha…
Abstract: As sessile organisms, plants are subject to a multitude of environmental variations including several which directly affect their interaction with the atmosphere. Given the indiscriminant nature of Rubisco, the relative rates of photosynthesis and photorespiration are known to be responsive to changes in gas composition. However, comprehensive profiling methods have not yet been appli…
Abstract; Plant root development is strongly affected by nutrient availability. Despite the importance of structure and function of roots in nutrient acquisition, statistical modeling approaches to evaluate dynamic and temporal modulations of root system architecture in response to nutrient availability have remained as widely open and exploratory areas in root biology. In this study, we devel…
athione reductase (GR) catalyzes the reduction of glutathione disulfide (GSSG) to reduced glutathione (GSH) and participates in the ascorbate-glutathione cycle, which scavenges H2O2. Here, we report that chloroplastic/mitochondrial GR2 is an important regulator of leaf senescence. Seed development of the homozygous gr2 knockout mutant was blocked at the globular stage. Therefore, to investigate…
Flavonoids constitute amajor group of plant phenolic compounds. While extensively studied in Arabidopsis, profiling and naturally occurring variation of these compounds in rice (Oryza sativa), themonocotmodel plant, are less reported. Using a collection of rice germplasm, comprehensive profiling and natural variation of flavonoids were presented in this report. Application of a widely targeted …
Plant responses to abiotic stresses are coordinated by arrays of growth and developmental Programs. Gibberellic acid (GA) and abscisic acid (ABA) play critical roles in the developmental programs and environmental responses, respectively,through complex signaling and metabolism networks. However, crosstalk between the two phytohormones in stress responses remains largely unknown. In this study,…