Research Article

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10/11/2012
Abiotic stress; Autophagy; Phylogeny; Rice

Autophagy, a complex and conserved mechanism, serving as a defense response in all eukaryotic organisms, is regulated by several proteins, among which ATG proteins are the most important due to their involvement in autophagosome formation. ATG6/Beclin-1 proteins, reported to be essential for autophagosome formation and assigned as a conserved domain, were subjected to database searches. ... more

R.M. Rana; S. Dong; Z. Ali; J. Huang; H.S. Zhang
08/16/2012
Abiotic stress; Heavy metals; Photosynthesis; Phytotoxicity; Stress resistance; Woody species

Sibipiruna (Caesalpinia peltophoroides Benth) is a tree of the Brazilian Atlantic Forest. It is a flowering ornamental tree widely planted throughout Brazil and indicated for restoration of degraded areas. We examined protein profile changes in leaves of seedlings of C. peltophoroides grown in nutrient solution under greenhouse conditions, after exposure to cadmium (Cd; ... more

L.M.C. Gomes; A.S. Gesteira; A.A.F. de Almeida; A.V. de Castro; L.O. Dias; C.P. Pirovani; F.P. Gomes
03/12/2014
Abiotic stress; Cell death; Chaperone; Endoplasmic reticulum; Intracellular pH; Phosphorylation

Environmental stresses such as drought, freezing, and high salinity induce osmotic stress in plant cells. The plant response to osmotic stress involves a number of physiological and developmental changes, which are made possible, in part, by the modulation of the expression of specific genes. Phosphate-induced-1 gene (PHI-1) was first isolated from phosphate-treated ... more

A.O. Sousa; E.T.C.M. Assis; C.P. Pirovani; F.C. Alvim; M.G.C. Costa
03/30/2015
Abiotic stress; Fatty acids; Proteomics; Transcriptomics; Zea mays

The aim of this study was to characterize maize lines tolerant to cold temperatures during the germination process. Seeds from lines with different levels of tolerance to low temperatures were used; 3 lines were classified as tolerant and 3 as susceptible to low germination temperatures. A field was set up to multiply seeds from selected lines. After the seeds were harvested and ... more

I.C. Silva-Neta; E.V. Pinho; A.D. Veiga; R.G. Pìnho; R.M. Guimarães; F. Caixeta; H.O. Santos; T.L. Marques
03/06/2015
endosperm; Gene expression; Hormone; Maize; Sugar

Starch is the major storage product in the endosperm of cereals. Its synthesis is closely related to sucrose metabolism. In our previous study, we found that the expression of most of the genes involved in starch synthesis might be regulated by sugars and hormones in the maize endosperm. However, little is known regarding the transcriptional regulation of genes involved in sucrose ... more

X.D. Ren; H.M. Liu; Y.H. Liu; Y.F. Hu; J.J. Zhang; Y.B. Huang
12/30/2002
EMS; Ethyl methyl sulfonate; Gamma radiation; Glufosinate; Herbicide resistance; Mutagenesis; Rice; Segregation

Over the last two decades, mutational techniques have become one of the most important tools available to progressive rice- breeding programs. In a mutation-breeding program initiated in 1999 at the Instituto Agronômico of Campinas, SP, Brazil, a rice line, IAC103, was selected for mutational studies with gamma radiation and ethyl methyl sulfonate mutagenesis, with the aim of ... more

S.S. Sandhu; C.R. Bastos; L.Ernesto Azini; A.Tulmann Neto; C. Colombo
03/02/2010
Cytokinin; Response regulator; Rice; RT-PCR

Response regulators are part of a two-component regulatory system. The type-A Arabidopsis response regulators act as negative regulators. To understand the function of type-A response regulators in the model monocot plant, rice (Japonica cultivar-group: Zhonghua11), we overexpressed two type-A OsRR genes, OsRR3 and OsRR5 (pACT1:OsRR3 and pACT1:OsRR5). We hoped to gain insight ... more

X. Cheng; H. Jiang; J. Zhang; Y. Qian; S. Zhu; B. Cheng
11/18/2013
1000-grain weight; NIL; qsgw7; QTL; Rice

The genetic control of grain weight (GW) remains poorly understood. Quantitative trait loci (QTLs) determining the GW of rice were identified using a natural GW mutant, sgw. Using a segregating population derived from sgw (low GW) and cultivar 9311 ('9311'; indica, high GW), the chromosome segment associated with GW was detected on the short arm of chromosome 7. To validate and further ... more

J.M. Bian; H.H. He; C.J. Li; H. Shi; C.L. Zhu; X.S. Peng; J.R. Fu; X.P. He; X.R. Chen; L.F. Hu; L.J. Ouyang
11/11/2013
Alternative oxidase; Cold; OsAOX1a; Oxidative damage; Rice

Low temperature is a major environmental stress in rice cultivating and production. The alternative oxidase 1 (AOX1) gene is potentially important for genetic engineering to increase cold adaptation. However, previous studies related to this effect have mostly focused on the dicot plants Arabidopsis and tobacco, whereas functional research on rice is limited. In this ... more

C.R. Li; D.D. Liang; R.F. Xu; H. Li; Y.P. Zhang; R.Y. Qin; L. Li; P.C. Wei; J.B. Yang
09/23/2013
Dwarf and narrow leaf; Fine mapping; Gibberellic acid-insensitive; Rice

Plant height is one of the most important agronomic traits of rice (Oryza sativa). Dwarf mutants are ideal materials for research on the mechanisms of regulation of rice plant height. We examined a new dwarf and narrow-leaf mutant dnl1. Phenotypic analysis showed that the dnl1 mutant has a thinner culm and more tillers, but the number of grains per panicle, the ... more

X.J. Wei; S.Q. Tang; G.N. Shao; M.L. Chen; Y.C. Hu; P.S. Hu

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