Expression of sweet potato cysteine protease SPCP2 altered developmental characteristics and stress responses in transgenic Arabidopsis plants

Expression of sweet potato cysteine protease SPCP2 altered developmental characteristics and stress responses in transgenic Arabidopsis plants

2010 Elsevier GmbH. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Journal of plant physiology. - 1979. - 167(2010), 10 vom: 01. Juli, Seite 838-47
1. Verfasser: Chen, Hsien-Jung (VerfasserIn)
Weitere Verfasser: Su, Cheng-Ting, Lin, Chia-Hung, Huang, Guan-Jhong, Lin, Yaw-Huei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Journal of plant physiology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't DNA Primers DNA, Plant Cysteine Proteases EC 3.4.-
Beschreibung
Zusammenfassung:2010 Elsevier GmbH. All rights reserved.
In this report a full-length cDNA, SPCP2, which encoded a putative papain-like cysteine protease was isolated from senescent leaves of sweet potato (Ipomoea batatas). SPCP2 contained 1101 nucleotides (366 amino acids) in its open reading frame, and exhibited high amino acid sequence identities (ca. 68% to 83%) with plant cysteine proteases, including Actinidia deliciosa, Arabidopsis thaliana, Brassica oleracea, Phaseolus vulgaris, Pisum sativa, Vicia faba, Vicia sativa and Vigna mungo. RT-PCR analysis showed that SPCP2 gene expression was enhanced significantly in natural senescent leaves and in dark-, abscisic acid- (ABA-), jasmonic acid- (JA-) and ethephon-induced senescent leaves, but was almost not detected in mature green leaves, stems, and roots. Transgenic Arabidopsis with constitutive SPCP2 expression exhibited earlier floral transition from vegetative to reproductive growth, higher percentage of incompletely developed siliques per plant, reduced average fresh weight and lower germination percentage of seed, and higher salt and drought stress tolerance compared to those of control. Based on these results we conclude that sweet potato papain-like cysteine protease, SPCP2, is a functional senescence-associated gene, and its expression causes altered developmental characteristics and stress responses in transgenic Arabidopsis plants
Beschreibung:Date Completed 03.08.2010
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1618-1328
DOI:10.1016/j.jplph.2010.01.005