Ravi Valluru

ORCID: 0000-0001-5725-5766
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Wheat and Barley Genetics and Pathology
  • Genetic Mapping and Diversity in Plants and Animals
  • Plant nutrient uptake and metabolism
  • Crop Yield and Soil Fertility
  • Plant responses to elevated CO2
  • Plant Stress Responses and Tolerance
  • Genetics and Plant Breeding
  • Greenhouse Technology and Climate Control
  • Genomics and Phylogenetic Studies
  • Microbial Metabolites in Food Biotechnology
  • Plant Water Relations and Carbon Dynamics
  • Plant Micronutrient Interactions and Effects
  • Remote Sensing in Agriculture
  • Leaf Properties and Growth Measurement
  • Chromosomal and Genetic Variations
  • Energy, Environment, Economic Growth
  • Bioenergy crop production and management
  • Agricultural Productivity and Crop Improvement
  • Rice Cultivation and Yield Improvement
  • RNA and protein synthesis mechanisms
  • Seed Germination and Physiology
  • Photovoltaic Systems and Sustainability
  • Smart Agriculture and AI
  • Genetic diversity and population structure
  • Legume Nitrogen Fixing Symbiosis

University of Lincoln
2020-2023

Centro Internacional de Mejoramiento de Maíz Y Trigo
2014-2022

Cornell University
2018-2021

Center for Genomic Science
2018

Lancaster University
2016

University of Hohenheim
2008-2012

Laboratoire d'Écophysiologie Moléculaire des Plantes sous Stress Environnementaux
2011

Institut Agro Montpellier
2011

In nature, no single plant completes its life cycle without encountering environmental stress. When cells surpass stress threshold stimuli, chemically reactive oxygen species (ROS) are generated that can cause oxidative damage or act as signals. Plants have developed numerous ROS-scavenging systems to minimize the cytotoxic effects of ROS. The role sucrosyl oligosaccharides (SOS), including fructans and raffinose family (RFOs), is well established during physiology. They believed important...

10.1093/jxb/ern297 article EN Journal of Experimental Botany 2008-11-25

Deep learning methodologies have revolutionized prediction in many fields and show potential to do the same molecular biology genetics. However, applying these methods their current forms ignores evolutionary dependencies within biological systems can result false positives spurious conclusions. We developed two approaches that account for relatedness machine models: ( i ) gene-family–guided splitting ii ortholog contrasts. The first approach accounts evolution by constraining model training...

10.1073/pnas.1814551116 article EN Proceedings of the National Academy of Sciences 2019-03-06

Wheat, rice, maize, pearl millet, and sorghum provide over half of the world's food calories. To maintain global security, with added challenge climate change, there is an increasing need to exploit existing genetic variability develop cultivars superior yield potential stress adaptation. The opportunity share knowledge between crops identify priority traits for future research can be exploited increase breeding impacts assist in identifying loci that control A more internationally...

10.1016/j.gfs.2016.02.002 article EN cc-by-nc-nd Global Food Security 2016-03-01

Wheat is an important staple that acts as a primary source of dietary energy, protein, and essential micronutrients such iron (Fe) zinc (Zn) for the world's population. Approximately two billion people suffer from micronutrient deficiency, thus breeders have crossed high Zn progenitors synthetic hexaploid wheat, T. dicoccum, spelta, landraces to generate wheat varieties with competitive yield enhanced grain are being adopted by farmers in South Asia. Here we report genome-wide association...

10.1038/s41598-018-31951-z article EN cc-by Scientific Reports 2018-09-04

The gaseous phytohormone ethylene plays an important role in spike development wheat (Triticum aestivum). However, the genotypic variation and genomic regions governing (SET) production under long-term heat stress remain unexplored. We investigated of SET its relationship with dry weight (SDW) 130 diverse elite lines landraces heat-stressed field conditions. employed Illumina iSelect 90K single nucleotide polymorphism (SNP) genotyping array to identify genetic loci for SDW through a...

10.1111/nph.14367 article EN New Phytologist 2016-12-05

Abstract Sorghum (Sorghum bicolor) is a model C4 crop made experimentally tractable by extensive genomic and genetic resources. Biomass sorghum studied as feedstock for biofuel forage. Mechanistic modeling suggests that reducing stomatal conductance (gs) could improve intrinsic water use efficiency (iWUE) biomass production. Phenotyping to discover genotype-to-phenotype associations remains bottleneck in understanding the mechanistic basis natural variation gs iWUE. This study addressed...

10.1093/plphys/kiab346 article EN cc-by PLANT PHYSIOLOGY 2021-07-23

Although, plant hormones play an important role in adjusting growth response to environmental perturbation, the relative contributions of abscisic acid (ABA) and ethylene remain elusive. Using six spring wheat genotypes differing for stress tolerance, we show that young seedlings drought-tolerant (DT) group maintained or increased shoot dry weight (SDW) while drought-susceptible (DS) decreased SDW mild drought. Both DT DS groups endogenous ABA concentrations under drought compared control....

10.3389/fpls.2016.00461 article EN cc-by Frontiers in Plant Science 2016-04-18

Sorghum (Sorghum bicolor L.) is a major food cereal for millions of people worldwide. The sorghum genome, like other species, accumulates deleterious mutations, likely impacting its fitness. lack recombination, drift, and the coupling with favorable loci impede removal mutations from genome by selection. To study how variants impact phenotypes, we identified putative among ∼5.5 M segregating 229 diverse biomass lines. We provide whole-genome estimate burden in sorghum, showing that ∼33%...

10.1534/genetics.118.301742 article EN Genetics 2019-01-08

Abstract Purpose of Review The paper discusses how robotics and autonomous systems (RAS) are being deployed to decarbonise agricultural production. climate emergency cannot be ameliorated without dramatic reductions in greenhouse gas emissions across the agri-food sector. This review outlines transformational role for system considers where research focus might prioritised. Recent Findings Agri-robotic provide multiple emerging opportunities that facilitate transition towards net zero...

10.1007/s43154-022-00077-6 article EN cc-by Current Robotics Reports 2022-04-28

Abstract Stomata allow CO2 uptake by leaves for photosynthetic assimilation at the cost of water vapor loss to atmosphere. The opening and closing stomata in response fluctuations light intensity regulate fluxes are essential maintaining water-use efficiency (WUE). However, a little is known about genetic basis natural variation stomatal movement, especially C4 crops. This partly because change difficult measure scale required association studies. Here, we used high-throughput thermal...

10.1093/plphys/kiab395 article EN cc-by-nc-nd PLANT PHYSIOLOGY 2021-08-14

Abstract Phenotypic plasticity of two primitive wheat species ( Triticum monococcum L. and dicoccum S.) was studied in response to early chilling stress. Selection pressure differentials, gradients costs on plant morphogenesis, growth reserve carbohydrate consumption were estimated. Regression analysis applied investigate differential developmental changes patterns between treatments. Four‐day‐old seedlings T. , differing stature carbohydrates, given an temperature (4 °C for 42 day) compared...

10.1111/j.1438-8677.2011.00540.x article EN Plant Biology 2012-02-06

Photovoltaic Agriculture (PA) is a new management system combining industry with modern agriculture that can effectively reduce the competition for limited land resource usage between electric power production and agricultural production. However, PA has been facing challenge of managing plant protection measures because it difficult to monitor plants grown under photovoltaic panels by remote sensing satellites pesticide applications using drones. To overcome this challenge, Solar...

10.3390/electronics12051221 article EN Electronics 2023-03-03

OPINION article Front. Plant Sci., 23 March 2015Sec. Physiology Volume 6 - 2015 | https://doi.org/10.3389/fpls.2015.00180

10.3389/fpls.2015.00180 article EN cc-by Frontiers in Plant Science 2015-03-23

Many soils of the semi-arid tropics are deficient in P, and under such adverse conditions, establishment pearl millet seedlings is a critical step to achieve satisfactory crop stands. Phosphorus fertilizer expensive for small holder farmers only applied at low rates, insufficient give Methods needed enhance productivity rates application. Here, we tested hypothesis that minute application P early seedling stage, equivalent 125–500 g P/ha, would plant P-limiting conditions. We measured...

10.1111/j.1475-2743.2009.00245.x article EN Soil Use and Management 2009-09-29

Abstract Wheat and rice are the most important food crops in agriculture providing around 50% of all calories consumed human diet. While both C 3 species, evolution domestication wheat occurred very different environments, resulting diverse anatomical metabolic adaptation. This review focuses on current understanding their adaptation an agronomic context. The similarities differences between discussed, focusing traits related to phenology, photosynthesis, assimilate partitioning, lodging...

10.1002/fes3.71 article EN cc-by Food and Energy Security 2015-09-22

ABSTRACT Sorghum is a model C4 crop made experimentally tractable by extensive genomic and genetic resources. Biomass sorghum also studied as feedstock for biofuel forage. Mechanistic modelling suggests that reducing stomatal conductance ( g s ) could improve intrinsic water use efficiency iWUE biomass production. Phenotyping discovery of genotype to phenotype associations remain bottlenecks in efforts understand the mechanistic basis natural variation . This study addressed multiple...

10.1101/2020.11.02.365213 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2020-11-03

ABSTRACT Sorghum ( bicolor (L.) Moench) is a major staple food cereal for millions of people worldwide. The sorghum genome, like other species, accumulates deleterious mutations, likely impacting its fitness. Though selection keeps mutations rare, their complete removal from the genome impeded due to lack recombination, drift, and coupling with favorable loci. To study how impact agronomic phenotypes, we identified putative among ~5.5M segregating variants 229 diverse lines. We provide...

10.1101/357418 preprint EN cc-by-nc-nd bioRxiv (Cold Spring Harbor Laboratory) 2018-06-27

ABSTRACT Deep learning methodologies have revolutionized prediction in many fields, and show potential to do the same molecular biology genetics. However, applying these methods their current forms ignores evolutionary dependencies within biological systems can result false positives spurious conclusions. We developed two novel approaches that account for relatedness machine models: 1) gene-family guided splitting, 2) ortholog contrasts. The first approach accounts evolution by constraining...

10.1101/372367 preprint EN bioRxiv (Cold Spring Harbor Laboratory) 2018-07-19

Abstract Sorghum and maize share a close evolutionary history that can be explored through comparative genomics. To perform large-scale comparison of the genomic variation between these two species, we analyzed 13 million variants identified from whole genome resequencing 468 sorghum lines together with 25 previously in 1,218 lines. Deleterious mutations both species were prevalent pericentromeric regions, enriched non-syntenic genes, present at low allele frequencies. A deleterious burden...

10.1101/777623 preprint EN cc-by bioRxiv (Cold Spring Harbor Laboratory) 2019-09-23
Coming Soon ...