keyword
MENU ▼
Read by QxMD icon Read
search

Oryza glaberrima

keyword
https://www.readbyqxmd.com/read/29330361/discovery-of-microrna-target-modules-of-african-rice-oryza-glaberrima-under-salinity-stress
#1
Tapan Kumar Mondal, Alok Kumar Panda, Hukam C Rawal, Tilak Raj Sharma
Oryza glaberrima is the second edible rice in the genus Oryza. It is grown in the African countries. miRNAs are regulatory molecules that are involved in every domains of gene expression including salinity stress response. Although several miRNAs have been reported from various species of Oryza, yet none of them are from this species. Salt treated (200 mM NaCl for 48 h) and control smallRNA libraries of RAM-100, a salt tolerant genotype, each with 2 replications generated 150 conserve and 348 novel miRNAs...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29161206/a-hypersensitivity-like-response-to-meloidogyne-graminicola-in-rice-oryza-sativa-l
#2
Ngan Thi Phan, Dirk De Waele, Mathias Lorieux, Lizhong Xiong, Stephane Bellafiore
Meloidogyne graminicola (M. graminicola) is a major plant-parasitic nematode affecting rice cultivation in Asia. Resistance to this nematode was found in the African rice genotypes Oryza glaberrima and O. longistaminata, however, due to interspecific hybrid sterility, the introgression of resistance genes in the widely consumed O. sativa varieties remains challenging. Recently, resistance was found in O. sativa and here we report for the first time the histological and genetic characterization of the resistance to M...
November 21, 2017: Phytopathology
https://www.readbyqxmd.com/read/29093721/genetic-variation-and-population-structure-of-oryza-glaberrima-and-development-of-a-mini-core-collection-using-dartseq
#3
Marie-Noelle Ndjiondjop, Kassa Semagn, Arnaud C Gouda, Sèdjro B Kpeki, Daniel Dro Tia, Mounirou Sow, Alphonse Goungoulou, Moussa Sie, Xavier Perrier, Alain Ghesquiere, Marilyn L Warburton
The sequence variation present in accessions conserved in genebanks can best be used in plant improvement when it is properly characterized and published. Using low cost and high density single nucleotide polymorphism (SNP) assays, the genetic diversity, population structure, and relatedness between pairs of accessions can be quickly assessed. This information is relevant for different purposes, including creating core and mini-core sets that represent the maximum possible genetic variation contained in the whole collection...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28993622/evidence-for-mid-holocene-rice-domestication-in-the-americas
#4
Lautaro Hilbert, Eduardo Góes Neves, Francisco Pugliese, Bronwen S Whitney, Myrtle Shock, Elizabeth Veasey, Carlos Augusto Zimpel, José Iriarte
The development of agriculture is one of humankind's most pivotal achievements. Questions about plant domestication and the origins of agriculture have engaged scholars for well over a century, with implications for understanding its legacy on global subsistence strategies, plant distribution, population health and the global methane budget. Rice is one of the most important crops to be domesticated globally, with both Asia (Oryza sativa L.) and Africa (Oryza glaberrima Steud.) discussed as primary centres of domestication...
October 9, 2017: Nature Ecology & Evolution
https://www.readbyqxmd.com/read/28992130/stomatal-conductance-mesophyll-conductance-and-transpiration-efficiency-in-relation-to-leaf-anatomy-in-rice-and-wheat-genotypes-under-drought
#5
Wenjing Ouyang, Paul C Struik, Xinyou Yin, Jianchang Yang
Increasing leaf transpiration efficiency (TE) may provide leads for growing rice like dryland cereals such as wheat (Triticum aestivum). To explore avenues for improving TE in rice, variations in stomatal conductance (gs) and mesophyll conductance (gm) and their anatomical determinants were evaluated in two cultivars from each of lowland, aerobic, and upland groups of Oryza sativa, one cultivar of O. glaberrima, and two cultivars of T. aestivum, under three water regimes. The TE of upland rice, O. glaberrima, and wheat was more responsive to the gm/gs ratio than that of lowland and aerobic rice...
September 15, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28893199/comprehensive-survey-and-evolutionary-analysis-of-genome-wide-mirna-genes-from-ten-diploid-oryza-species
#6
Showkat Ahmad Ganie, Ananda Bhusan Debnath, Abubakar Mohammad Gumi, Tapan Kumar Mondal
BACKGROUND: MicroRNAs (miRNAs) are non-coding RNAs that play versatile roles in post-transcriptional gene regulation. Although much is known about their biogenesis, and gene regulation very little is known about their evolutionary relation among the closely related species. RESULT: All the orthologous miRNA genes of Oryza sativa (japonica) from 10 different Oryza species were identified, and the evolutionary changes among these genes were analysed. Significant differences in the expansion of miRNA gene families were observed across the Oryza species...
September 11, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28499072/sequencing-of-bulks-of-segregants-allows-dissection-of-genetic-control-of-amylose-content-in-rice
#7
Peterson Wambugu, Marie-Noelle Ndjiondjop, Agnelo Furtado, Robert Henry
Amylose content (AC) is a key quality trait in rice. A cross between Oryza glaberrima (African rice) and Oryza sativa (Asian rice) segregating for AC was analyzed by sequencing bulks of individuals with high and low AC. SNP associated with the granule bound starch synthase (GBSS1) locus on chromosome 6 were polymorphic between the bulks. In particular a G/A SNP that would result in an Asp to Asn mutation was identified. This amino acid substitution may be responsible for differences in GBSS activity as it is adjacent to a disulphide linkage conserved in all grass GBSS proteins...
May 12, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28481332/a-single-nucleotide-polymorphism-causes-smaller-grain-size-and-loss-of-seed-shattering-during-african-rice-domestication
#8
Wenguang Wu, Xiaoyun Liu, Muhua Wang, Rachel S Meyer, Xiaojin Luo, Marie-Noelle Ndjiondjop, Lubin Tan, Jianwei Zhang, Jianzhong Wu, Hongwei Cai, Chuanqing Sun, Xiangkun Wang, Rod A Wing, Zuofeng Zhu
Grain size is one of the most important components of grain yield and selecting large seeds has been a main target during plant domestication. Surprisingly, the grain of African cultivated rice (Oryza glaberrima Steud.) typically is smaller than that of its progenitor, Oryza barthii. Here we report the cloning and characterization of a quantitative trait locus, GL4, controlling the grain length on chromosome 4 in African rice, which regulates longitudinal cell elongation of the outer and inner glumes. Interestingly, GL4 also controls the seed shattering phenotype like its orthologue SH4 gene in Asian rice...
May 8, 2017: Nature Plants
https://www.readbyqxmd.com/read/28421550/distribution-genetic-diversity-and-potential-spatiotemporal-scale-of-alien-gene-flow-in-crop-wild-relatives-of-rice-oryza-spp-in-colombia
#9
Evert Thomas, Eduardo Tovar, Carolina Villafañe, José Leonardo Bocanegra, Rodrigo Moreno
BACKGROUND: Crop wild relatives (CWRs) of rice hold important traits that can contribute to enhancing the ability of cultivated rice (Oryza sativa and O. glaberrima) to produce higher yields, cope with the effects of climate change, and resist attacks of pests and diseases, among others. However, the genetic resources of these species remain dramatically understudied, putting at risk their future availability from in situ and ex situ sources. Here we assess the distribution of genetic diversity of the four rice CWRs known to occur in Colombia (O...
December 2017: Rice
https://www.readbyqxmd.com/read/28334204/transcriptomic-and-histological-responses-of-african-rice-oryza-glaberrima-to-meloidogyne-graminicola-provide-new-insights-into-root-knot-nematode-resistance-in-monocots
#10
Anne-Sophie Petitot, Tina Kyndt, Rana Haidar, Alexis Dereeper, Myriam Collin, Janice de Almeida Engler, Godelieve Gheysen, Diana Fernandez
Background and Aims: The root-knot nematode Meloidogyne graminicola is responsible for production losses in rice ( Oryza sativa ) in Asia and Latin America. The accession TOG5681 of African rice, O. glaberrima , presents improved resistance to several biotic and abiotic factors, including nematodes. The aim of this study was to assess the cytological and molecular mechanisms underlying nematode resistance in this accession. Methods: Penetration and development in M...
March 1, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28323300/a-walk-on-the-wild-side-oryza-species-as-source-for-rice-abiotic-stress-tolerance
#11
Paloma Koprovski Menguer, Raul Antonio Sperotto, Felipe Klein Ricachenevsky
Oryza sativa, the common cultivated rice, is one of the most important crops for human consumption, but production is increasingly threatened by abiotic stresses. Although many efforts have resulted in breeding rice cultivars that are relatively tolerant to their local environments, climate changes and population increase are expected to soon call for new, fast generation of stress tolerant rice germplasm, and current within-species rice diversity might not be enough to overcome such needs. The Oryza genus contains other 23 wild species, with only Oryza glaberrima being also domesticated...
2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28173009/de-novo-assemblies-of-three-oryza-glaberrima-accessions-provide-first-insights-about-pan-genome-of-african-rices
#12
Cécile Monat, Bérengère Pera, Marie-Noelle Ndjiondjop, Mounirou Sow, Christine Tranchant-Dubreuil, Leila Bastianelli, Alain Ghesquière, Francois Sabot
Oryza glaberrima is one of the two cultivated species of rice, and harbors various interesting agronomic traits, especially in biotic and abiotic resistance, compared with its Asian cousin O. sativa. A previous reference genome was published but newer studies highlighted some missing parts. Moreover, global species diversity is known nowadays to be represented by more than one single individual. For that purpose, we sequenced, assembled and annotated de novo three different cultivars from O. glaberrima. After validating our assemblies, we were able to better solve complex regions than the previous assembly and to provide a first insight in pan-genomic divergence between individuals...
January 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28149498/differences-in-meristem-size-and-expression-of-branching-genes-are-associated-with-variation-in-panicle-phenotype-in-wild-and-domesticated-african-rice
#13
K N Ta, H Adam, Y M Staedler, J Schönenberger, T Harrop, J Tregear, N V Do, P Gantet, A Ghesquière, S Jouannic
BACKGROUND: The African rice Oryza glaberrima was domesticated from its wild relative Oryza barthii about 3000 years ago. During the domestication process, panicle complexity changed from a panicle with low complexity in O. barthii, to a highly branched panicle carrying more seeds in O. glaberrima. To understand the basis of this differential panicle development between the two species, we conducted morphological and molecular analyses of early panicle development. RESULTS: Using X-ray tomography, we analyzed the morphological basis of early developmental stages of panicle development...
2017: EvoDevo
https://www.readbyqxmd.com/read/28144699/fine-mapping-of-rymv3-a-new-resistance-gene-to-rice-yellow-mottle-virus-from-oryza-glaberrima
#14
Hélène Pidon, Alain Ghesquière, Sophie Chéron, Souley Issaka, Eugénie Hébrard, François Sabot, Olufisayo Kolade, Drissa Silué, Laurence Albar
A new resistance gene against Rice yellow mottle virus was identified and mapped in a 15-kb interval. The best candidate is a CC-NBS-LRR gene. Rice yellow mottle virus (RYMV) disease is a serious constraint to the cultivation of rice in Africa and selection for resistance is considered to be the most effective management strategy. The aim of this study was to characterize the resistance of Tog5307, a highly resistant accession belonging to the African cultivated rice species (Oryza glaberrima), that has none of the previously identified resistance genes to RYMV...
April 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/27965688/mutations-in-rice-yellow-mottle-virus-polyprotein-p2a-involved-in-rymv2-gene-resistance-breakdown
#15
Agnès Pinel-Galzi, Christine Dubreuil-Tranchant, Eugénie Hébrard, Cédric Mariac, Alain Ghesquière, Laurence Albar
Rice yellow mottle virus (RYMV) is one of the major diseases of rice in Africa. The high resistance of the Oryza glaberrima Tog7291 accession involves a null allele of the RYMV2 gene, whose ortholog in Arabidopsis, CPR5, is a transmembrane nucleoporin involved in effector-triggered immunity. To optimize field deployment of the RYMV2 gene and improve its durability, which is often a weak point in varietal resistance, we analyzed its efficiency toward RYMV isolates representing the genetic diversity of the virus and the molecular basis of resistance breakdown...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27907023/field-trials-reveal-ecotype-specific-responses-to-mycorrhizal-inoculation-in-rice
#16
Abdala Gamby Diedhiou, Fatou Kine Mbaye, Daouda Mbodj, Mathieu Ndigue Faye, Sarah Pignoly, Ibrahima Ndoye, Koffi Djaman, Souleymane Gaye, Aboubacry Kane, Laurent Laplaze, Baboucarr Manneh, Antony Champion
The overuse of agricultural chemicals such as fertilizer and pesticides aimed at increasing crop yield results in environmental damage, particularly in the Sahelian zone where soils are fragile. Crop inoculation with beneficial soil microbes appears as a good alternative for reducing agricultural chemical needs, especially for small farmers. This, however, requires selecting optimal combinations of crop varieties and beneficial microbes tested in field conditions. In this study, we investigated the response of rice plants to inoculation with arbuscular mycorrhizal fungi (AMF) and plant growth promoting bacteria (PGPB) under screenhouse and field conditions in two consecutive seasons in Senegal...
2016: PloS One
https://www.readbyqxmd.com/read/27861933/a-single-base-change-explains-the-independent-origin-of-and-selection-for-the-nonshattering-gene-in-african-rice-domestication
#17
Khin Thanda Win, Yoshiyuki Yamagata, Kazuyuki Doi, Kazuhiro Uyama, Yasuko Nagai, Yosuke Toda, Takahiro Kani, Motoyuki Ashikari, Hideshi Yasui, Atsushi Yoshimura
Reduced seed shattering was a critical evolutionary step in crop domestication. Two cultivated rice species, Oryza sativa and Oryza glaberrima, were independently domesticated from the wild species Oryza rufipogon in Asia and Oryza barthii in Africa, respectively. A single nucleotide polymorphism (SNP) in the c gene, which encodes a trihelix transcription factor, causes nonshattering in O. sativa. However, the genetic mechanism of nonshattering in O. glaberrima is poorly understood. We conducted an association analysis for the coding sequences of SH3/SH4 in AA- genome rice species and the mutation suggested to cause nonshattering was demonstrated to do so using a positional-cloning approach in the O...
November 12, 2016: New Phytologist
https://www.readbyqxmd.com/read/27797953/de-novo-assemblies-of-three-oryza-glaberrima-accessions-provide-first-insights-about-pan-genome-of-african-rices
#18
Cécile Monat, Bérengère Pera, Marie-Noelle Ndjiondjop, Mounirou Sow, Christine Tranchant-Dubreuil, Leila Bastianelli, Alain Ghesquière, Francois Sabot
Oryza glaberrima is one of the two cultivated species of rice, and harbors various interesting agronomic traits, especially in biotic and abiotic resistance, compared to its Asian cousin O. sativa A previous reference genome was published but newer studies highlighted some missing parts. Moreover, global species diversity is known nowadays to be represented by more than one single individual. For that purpose, we sequenced, assembled and annotated de novo 3 different cultivars from O. glaberrima After validating our assemblies, we were able to better solve complex regions than the previous assembly and to provide a first insight in pan-genomic divergence between individuals...
October 20, 2016: Genome Biology and Evolution
https://www.readbyqxmd.com/read/27694825/tracing-ancestor-rice-of-suriname-maroons-back-to-its-african-origin
#19
Tinde R van Andel, Rachel S Meyer, Saulo A Aflitos, Judith A Carney, Margaretha A Veltman, Dario Copetti, Jonathan M Flowers, Reinout M Havinga, Harro Maat, Michael D Purugganan, Rod A Wing, M Eric Schranz
African rice (Oryza glaberrima) and African cultivation practices are said to have influenced emerging colonial plantation economies in the Americas(1,2). However, the level of impact of African rice practices is difficult to establish because of limited written or botanical records(2,3). Recent findings of O. glaberrima in rice fields of Suriname Maroons bear evidence of the high level of knowledge about rice among African slaves and their descendants, who consecrate it in ancestor rituals(4,5). Here we establish the strong similarity, and hence likely origin, of the first extant New World landrace of O...
October 3, 2016: Nature Plants
https://www.readbyqxmd.com/read/27603678/genetic-diversity-and-phenotypic-variation-in-an-introgression-line-population-derived-from-an-interspecific-cross-between-oryza-glaberrima-and-oryza-sativa
#20
Caijin Chen, Wenchuang He, Tondi Yacouba Nassirou, Wei Zhou, Yilong Yin, Xilong Dong, Quanqin Rao, Han Shi, Wubin Zhao, Andrew Efisue, Deming Jin
The introduction of closely related species genomic fragments is an effective way to enrich genetic diversity and creates new germplasms in crops. Here, we studied the genetic diversity of an introgression line (IL) population composed of 106 ILs derived from an interspecific tetra cross between O. glaberrima and O. sativa (RAM3/Jin23B//Jin23B///YuetaiB). The proportion of O. glaberrima genome (PGG) in the ILs ranged from 0.3% to 36.7%, with an average value of 12.32% which is close to the theoretically expected proportion...
2016: PloS One
keyword
keyword
98987
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"