Isolation and nucleotide sequence of a cDNA clone encoding the beta subunit of mitochondrial ATP synthase from Hevea brasiliensis

Chye, Mee‐Len; Tan, Chio Tee

doi:10.1007/bf00040680

Cited by 15 publications

(3 citation statements)

References 14 publications

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“…The numbers of identical residues in total residues are shown in parentheses. (B) Amino acid sequence alignment of the N-terminal portion of the nuclear-encoded mitochondrial RPS from rice and ATPB from N.plumbaginifolia (Boutry and Chua, 1985), rubber plant (Chye and Tan, 1992), rice (Sakamoto et al, 1992), wheat (Abulafia and Breiman, 1993) and maize (Winning et al, 1990) from top to bottom. Residues identical to the rice RPS11 amino acid sequence are shown by reverse contrast.…”

Section: Resultsmentioning

confidence: 99%

“…High similarity was found with presequences for the n-subunit of the ATP synthase (ATPB) from plants ( Figure 3B). The N-terminal region of mitochondrial RPS 11 encoded by the rice nuclear genome had 84% sequence identity (11 out of 13 amino acid residues) with ATPB presequences from Nicotiana plumbaginifolia and rubber plant (Boutry and Chua, 1985;Chye and Tan, 1992), provided that the extended region was translated from the first ATG codon (Figure 2A). All of the differences in the first 15 residues were conservative changes in N.plumbaginifolia.…”

Section: Resultsmentioning

confidence: 99%

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Targeting presequence acquisition after mitochondrial gene transfer to the nucleus occurs by duplication of existing targeting signals.

et al. 1996

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We have cloned a gene for mitochondrial ribosomal protein S11 (RPS11), which is encoded in lower plants by the mitochondrial genome, in higher plants by the nuclear genome, demonstrating genetic information transfer from the mitochondrial genome to the nucleus during flowering plant evolution. The sequence s11–1 encodes an N‐terminal extension as well as an organelle‐derived RPS11 region. Surprisingly, the N‐terminal region has high amino acid sequence similarity with the presequence of the beta‐subunit of ATP synthase from plant mitochondria, suggesting a common lineage of the presequences. The deduced N‐terminal region of s11–2, a second nuclear‐encoded homolog of rps11, shows high sequence similarity with the putative presequence of cytochrome oxidase subunit Vb. The sharing of the N‐terminal region together with its 5′ flanking untranslated nucleotide sequence in different proteins strongly suggests an involvement of duplication/recombination for targeting signal acquisition after gene migration. A remnant of ancestral rps11 sequence, transcribed and subjected to RNA editing, is found in the mitochondrial genome, indicating that inactivation of mitochondrial rps11 gene expression was initiated at the translational level prior to termination of transcription.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Targeting presequence acquisition after mitochondrial gene transfer to the nucleus occurs by duplication of existing targeting signals.

et al. 1996

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“…HbAPX , an ascorbate peroxidases gene, was involved in antioxidant system [12]. HbATP , encoding the β-subunit of mitochondrial ATP synthase in Hevea brasiliensis was cloned [13]. HbCuZnSOD and HbMnSOD encoded antioxidant superoxide dismutase enzymes, and their roles in drought response were confirmed in rubber tree [14].…”

Section: Introductionmentioning

confidence: 99%

Physiological and Molecular Responses to Variation of Light Intensity in Rubber Tree (Hevea brasiliensis Muell. Arg.)

Wang

2014

PLoS ONE

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Light is one of most important factors to plants because it is necessary for photosynthesis. In this study, physiological and gene expression analyses under different light intensities were performed in the seedlings of rubber tree (Hevea brasiliensis) clone GT1. When light intensity increased from 20 to 1000 µmol m−2 s−1, there was no effect on the maximal quantum yield of photosystem II (PSII) photochemistry (Fv/Fm), indicating that high light intensity did not damage the structure and function of PSII reaction center. However, the effective photochemical quantum yield of PSII (Y(II)), photochemical quenching coefficient (qP), electron transfer rate (ETR), and coefficient of photochemical fluorescence quenching assuming interconnected PSII antennae (qL) were increased significantly as the light intensity increased, reached a maximum at 200 µmol m−2 s−1, but decreased from 400 µmol m−2 s−1. These results suggested that the PSII photochemistry showed an optimum performance at 200 µmol m−2 s−1 light intensity. The chlorophyll content was increased along with the increase of light intensity when it was no more than 400 µmol m−2 s−1. Since increasing light intensity caused significant increase in H2O2 content and decreases in the per unit activity of antioxidant enzymes SOD and POD, but the malondialdehyde (MDA) content was preserved at a low level even under high light intensity of 1000 µmol m−2 s−1, suggesting that high light irradiation did not induce membrane lipid peroxidation in rubber tree. Moreover, expressions of antioxidant-related genes were significantly up-regulated with the increase of light intensity. They reached the maximum expression at 400 µmol m−2 s−1, but decreased at 1000 µmol m−2 s−1. In conclusion, rubber tree could endure strong light irradiation via a specific mechanism. Adaptation to high light intensity is a complex process by regulating antioxidant enzymes activities, chloroplast formation, and related genes expressions in rubber tree.

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Oxidative reactions of the pentose pathway and the origin of reducing equivalents for the biosynthesis of rubber inHevea brasiliensis latex

Arreguı́n

Arreguı́n-Espinosa

2000

J. Chem. Technol. Biotechnol.

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Isolation and nucleotide sequence of a cDNA clone encoding the beta subunit of mitochondrial ATP synthase from Hevea brasiliensis

Cited by 15 publications

References 14 publications

Targeting presequence acquisition after mitochondrial gene transfer to the nucleus occurs by duplication of existing targeting signals.

Targeting presequence acquisition after mitochondrial gene transfer to the nucleus occurs by duplication of existing targeting signals.

Physiological and Molecular Responses to Variation of Light Intensity in Rubber Tree (Hevea brasiliensis Muell. Arg.)

Oxidative reactions of the pentose pathway and the origin of reducing equivalents for the biosynthesis of rubber inHevea brasiliensis latex

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