Response of vacuolar processing enzyme in Malus hupehensis and MhVPEupsilon-overexpressing Arabidopsis to high temperature stress

• Autorzy: Su Q. , Ran K. , Men X.-J. , Zhang W.-W. , Fan S.-L. , Yan L.-J. , Yang H.-Q.
• Języki publikacji: EN

Abstrakty

EN

Malus hupehensis Rehd. is often used as rootstock of apple trees. Vacuolar processing enzyme (VPE) is one type of cysteine protease with substrate specificity to residues of asparagine and aspartic acid. The VPE activity, MhVPEc gene (GenBank number: FJ891065) expression and the amount of cell death in seedlings of M. hupehensis Rehd. all gradually increased with the increase of temperature from 26 to 42 C. To explore the function of VPE response to temperature stress, the overexpressing vector of MhVPEc was constructed and transformed into wild-type Arabidopsis thaliana Columbia. The responses of VPE, MhVPEc and apoptosis to high temperature stress were determined in the Arabidopsis seedlings of wild-type, MhVPEc-overexpressing lines and the VPE-null mutant. The leaves of MhVPEc-overexpressing lines were smaller and VPE activity and MhVPEc expression level were both obviously higher than the levels found in the wild-type and VPE-null mutant seedlings. Under high temperature treatment, VPE activity and MhVPEc expression level significantly increased accompanied by leaf withering, shorter roots, lipid peroxidation and increased cell death and apoptosis rate in all types of plants. The changes of these indicators were highest in MhVPEc-overexpressing transgenic plants, followed by the wild-type and were lowest in VPE-null mutant plants. These results suggest that MhVPEc overexpression in Arabidopsis accelerated cell membrane lipid peroxidation, promoted cell death and reduced the tolerance to high temperature stress compared with wild-type plants.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2015
• Tom: 37
• Numer: 04
• Opis fizyczny: Article: 82 [11 p.], fig.,ref.

Twórcy

autor

Su Q.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

autor

Ran K.

• College of Horticulture Science and Engineering, Shandong Institute of Pomology, Shandong Agricultural University, Longtan RD 66, Tai'an 271000, China

autor

Men X.-J.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

autor

Zhang W.-W.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

autor

Fan S.-L.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

autor

Yan L.-J.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

autor

Yang H.-Q.

• State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, No.61 Daizong Street, Tai'an 271018, China

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Identyfikatory

DOI

10.1007/s11738-015-1830-y