ATG genes, new players on early Fe toxicity response in rice ( Oryza sativa )

2020 ◽  
Vol 139 (6) ◽  
pp. 1090-1102
Author(s):  
Latóia Eduarda Maltzahn ◽  
Vívian Ebeling Viana ◽  
Carlos Busanello ◽  
Eduardo Venske ◽  
César Luis Girardi ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Toxicity Response ◽  
Atg Genes ◽  
Fe Toxicity

scholarly journals Molecular Marker-Assisted Selection of Rice Grain Quality on Rice (Oryza sativa L.) Lines Tolerant to Fe Toxicity Stress

2017 ◽  
Vol 7 (3) ◽  
pp. 268-276 ◽  
Author(s):  
Silvia Utami ◽  
Utut Widyastuti ◽  
Dwinita Utami ◽  
Ida Rosdianti ◽  
Puji Lestari
Keyword(s):  
Oryza Sativa ◽  
Molecular Marker ◽  
Marker Assisted Selection ◽  
Grain Quality ◽  
Oryza Sativa L ◽  
Rice Grain ◽  
Fe Toxicity ◽  
Selection Of

scholarly journals Role of ferritin in the rice tolerance to iron overload

2009 ◽  
Vol 66 (4) ◽  
pp. 549-555 ◽  
Author(s):  
Vivian Chagas da Silveira ◽  
Cristina Fadanelli ◽  
Raul Antonio Sperotto ◽  
Ricardo José Stein ◽  
Luiz Augusto Basso ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Iron Overload ◽  
Iron Homeostasis ◽  
Oryza Sativa L ◽  
Protein Accumulation ◽  
Tolerance Mechanisms ◽  
Protein Levels ◽  
Fe Toxicity ◽  
Excess Fe

Plants ordinarily face iron (Fe) deficiency, since this mineral is poorly available in soils under aerobic conditions. Nonetheless, wetland and irrigated rice plants can be exposed to excess, highly toxic Fe. Ferritin is a ubiquitous Fe-storage protein, important for iron homeostasis. Increased ferritin accumulation resulting from higher Fe availability was shown in some plant species. However, the role of ferritin in tolerance mechanisms to Fe overload in rice is yet to be established. In this study, recombinant rice ferritin was expressed in Escherichia coli, producing an anti-rice ferritin polyclonal antibody which was used to evaluate ferritin accumulation in two rice (Oryza sativa L.) cultivars, either susceptible (BR-IRGA 409) or tolerant (EPAGRI 108) to Fe toxicity. Increased ferritin mRNA and protein levels resulting from excess Fe treatment were detected in both cultivars, with higher ferritin protein accumulation in EPAGRI 108 plants, which also reached lower shoot Fe concentrations when submitted to iron overload. The tolerance mechanism to excess Fe in EPAGRI 108 seems to include both restricted Fe translocation and increased ferritin accumulation. This is the first work that shows higher accumulation of the ferritin protein in an iron-excess tolerant Oryza sativa cultivar, providing evidence of a possible role of this protein in iron tolerance mechanisms.

scholarly journals Genotype Variation in Rice (Oryza sativa L.) Tolerance to Fe Toxicity Might Be Linked to Root Cell Wall Lignification

2019 ◽  
Vol 10 ◽  
Author(s):  
Ricardo José Stein ◽  
Guilherme Leitão Duarte ◽  
Lívia Scheunemann ◽  
Marta Gomes Spohr ◽  
Artur Teixeira de Araújo Júnior ◽  
...  
Keyword(s):  
Cell Wall ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Root Cell ◽  
Genotype Variation ◽  
Fe Toxicity ◽  
Root Cell Wall

Chromosomal introgressions from Oryza meridionalis into domesticated rice Oryza sativa result in iron tolerance

2020 ◽  
Author(s):  
Andriele Wairich ◽  
Ben Hur Neves de Oliveira ◽  
Lin-Bo Wu ◽  
Varunseelan Murugaiyan ◽  
Marcia Margis-Pinheiro ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Leaf Sheath ◽  
Introgression Lines ◽  
Chromosome 9 ◽  
Interspecific Introgression ◽  
Oryza Meridionalis ◽  
Hybrid Genome ◽  
Glutathione S Transferases ◽  
Fe Toxicity ◽  
Iron Tolerance

Abstract Iron (Fe) toxicity is one of the most common mineral disorders affecting rice (Oryza sativa) production in flooded lowland fields. Oryza meridionalis is indigenous to northern Australia and grows in regions with Fe-rich soils, making it a candidate for use in adaptive breeding. With the aim of understanding tolerance mechanisms in rice, we screened a population of interspecific introgression lines from a cross between O. sativa and O. meridionalis for the identification of quantitative trait loci (QTLs) contributing to Fe-toxicity tolerance. Six putative QTLs were identified. A line carrying one introgression from O. meridionalis on chromosome 9 associated with one QTL was highly tolerant despite very high shoot Fe concentrations. Physiological, biochemical, ionomic, and transcriptomic analyses showed that the tolerance of the introgression lines could partly be explained by higher relative Fe retention in the leaf sheath and culm. We constructed the interspecific hybrid genome in silico for transcriptomic analysis and identified differentially regulated introgressed genes from O. meridionalis that could be involved in shoot-based Fe tolerance, such as metallothioneins, glutathione S-transferases, and transporters from the ABC and MFS families. This work demonstrates that introgressions of O. meridionalis into the O. sativa genome can confer increased tolerance to excess Fe.

scholarly journals Introgression from Oryza meridionalis into domesticated rice Oryza sativa results in shoot-based iron tolerance

2020 ◽  
Author(s):  
Andriele Wairich ◽  
Ben Hur Neves de Oliveira ◽  
Lin-Bo Wu ◽  
Varunseelan Murugaiyan ◽  
Marcia Margis-Pinheiro ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Leaf Sheath ◽  
Chromosome 9 ◽  
Physiological Basis ◽  
Interspecific Introgression ◽  
Oryza Meridionalis ◽  
Hybrid Genome ◽  
Glutathione S Transferases ◽  
Fe Toxicity ◽  
Iron Tolerance

AbstractIron (Fe) toxicity is one of the most common mineral disorders affecting rice (Oryza sativa) production in flooded lowland fields. Oryza meridionalis is endemic from Northern Australia and grows in regions with Fe rich soils, making it a candidate for use in adaptive breeding. Aiming to understand tolerance mechanisms in rice, we screened a population of interspecific introgression lines (IL) from a cross between O. sativa and O. meridionalis for the identification of QTLs contributing to Fe toxicity tolerance. Six putative QTLs were identified. A line carrying one introgression from O. meridionalis on chromosome 9 associated with one QTL was highly tolerant despite very high shoot Fe concentrations. Physiological, biochemical, ionomic and transcriptomic analyses showed that the IL tolerance could partly be explained by Fe retention in the leaf sheath and culm. We constructed the interspecific hybrid genome in silico for transcriptomic analysis, and identified differentially regulated introgressed genes from O. meridionalis that could be involved in shoot-based Fe tolerance, such as metallothioneins, glutathione S-transferases and transporters from ABC and MFS families. This is the first work to demonstrate that introgressions of O. meridionalis into the O. sativa genome can confer increased tolerance to excess Fe.HighlightWe identified QTLs associated with iron tolerance derived from O. meridionalis, and characterized their physiological basis in O. sativa.

Keragaan Morfologi dan Kandungan Antosianin Padi Beras Merah (Oryza sativa L.) di Kecamatan Munte dan Kecamatan Payung, Kabupaten Karo

1970 ◽  
Vol 5 (3) ◽  
pp. 391-403
Author(s):  
Wiwik Winarti ◽  
Eva Sartini Bayu ◽  
Revandy Iskandar Damanik
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
International Rice Research Institute ◽  
Research Institute

Keragaan morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.) pada Kecamatan Munte dan Kecamatan Payung di Kabupaten Karo. Penelitian ini bertujuan untuk mendapatkan informasi morfologi dan kandungan antosianin padi beras merah (Oryza sativa L.). Penelitian ini dimulai dari Juni 2017dan selesai pada Januari 2018 di kecamatan Munte dan Kecamatan Payung Kabupaten Karo.Metode survei deskriptif menggunakan panduan International Rice Research Institute (IRRI). Teknik penentuan lokasi secara sengaja dan pengamblan sampel secara kebetulan.Uji kandungan antosianin menggunakan metode analitik dengan menghomogenkan sampel. Hasil eksplorasi didapatkan 72 genotipe yang dibagi menjadi tiga lokasi lahan. Berdasaran uji kandungan antosianin didapatkan lahan A memiliki kandungan tertinggi yaitu 0,5 mg/100 g dan terendah yaitu lahan B 0,08 mg/100 g.

Efficacy of some insecticide modules against major insect pests and spider population of rice, Oryza sativa L.

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 257-262
Author(s):  
Atanu Seni ◽  
Bhimasen Naik
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Untreated Control ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Gall Midge ◽  
Stem Borer ◽  
The Other ◽  
The Third ◽  
Treated Plot

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

Correlation Studies on Grain Yield and its Component Traits in Rice (Oryza sativa L.)

2012 ◽  
Vol 2 (11) ◽  
pp. 13-14
Author(s):  
R. ARULMOZHI R. ARULMOZHI ◽  
◽  
Dr. A. MUTHUSWAMY Dr. A. MUTHUSWAMY
Keyword(s):  
Oryza Sativa ◽  
Grain Yield ◽  
Oryza Sativa L ◽  
Correlation Studies ◽  
Component Traits
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