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The Anthurium APRR2-like Gene Promotes Photosynthetic Pigment Accumulation in Response to Salt Stress

The Anthurium APRR2-like Gene Promotes Photosynthetic Pigment Accumulation in Response to Salt... Anthurium andraeanum Lind. is an important ornamental flower in which accumulation of photosynthetic pigments affects both growth status and ornamental quality. ARABIDOPSIS PSEUDO RESPONSE REGULATOR2 (APRR2) transcription factor, encoded by APRR2-like gene, is reported to influence the accumulation of photosynthetic pigments in tomato and cucumber. Although several studies have shown a link between photosynthetic pigment accumulation and stress tolerance, the possible role of APRR2-like genes in abiotic stress responses has been unclear. In this study, an APRR2 ortholog, AaAPRR2, was isolated from leaves of ‘dark green’ mutant in A. andraeanum ‘Sonate’. qRT-PCR showed that AaAPRR2 had higher transcript levels in spathe, root and strong leaf than in other tissues. The analysis of conserved structural domains in the 4 predicted APRR2-like protein sequence showed that AaAPRR2 contains conserved REC superfamily and MYB-like DNA domain. Heterologous overexpression of AaAPRR2 in Arabidopsis increased photosynthetic pigment accumulation and the transcript levels of endogenous genes related to photosynthetic pigment synthesis. Salinity stress analysis of 35S::AaAPRR2 and WT lines suggested that AaAPRR2 improved salt stress tolerance in Arabidopsis. These results demonstrate a link between photosynthetic pigment contents and abiotic stress and may be useful for enhancing plant color and improving ornamental value. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Tropical Plant Biology Springer Journals

The Anthurium APRR2-like Gene Promotes Photosynthetic Pigment Accumulation in Response to Salt Stress

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References (41)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2021
ISSN
1935-9756
eISSN
1935-9764
DOI
10.1007/s12042-021-09305-3
Publisher site
See Article on Publisher Site

Abstract

Anthurium andraeanum Lind. is an important ornamental flower in which accumulation of photosynthetic pigments affects both growth status and ornamental quality. ARABIDOPSIS PSEUDO RESPONSE REGULATOR2 (APRR2) transcription factor, encoded by APRR2-like gene, is reported to influence the accumulation of photosynthetic pigments in tomato and cucumber. Although several studies have shown a link between photosynthetic pigment accumulation and stress tolerance, the possible role of APRR2-like genes in abiotic stress responses has been unclear. In this study, an APRR2 ortholog, AaAPRR2, was isolated from leaves of ‘dark green’ mutant in A. andraeanum ‘Sonate’. qRT-PCR showed that AaAPRR2 had higher transcript levels in spathe, root and strong leaf than in other tissues. The analysis of conserved structural domains in the 4 predicted APRR2-like protein sequence showed that AaAPRR2 contains conserved REC superfamily and MYB-like DNA domain. Heterologous overexpression of AaAPRR2 in Arabidopsis increased photosynthetic pigment accumulation and the transcript levels of endogenous genes related to photosynthetic pigment synthesis. Salinity stress analysis of 35S::AaAPRR2 and WT lines suggested that AaAPRR2 improved salt stress tolerance in Arabidopsis. These results demonstrate a link between photosynthetic pigment contents and abiotic stress and may be useful for enhancing plant color and improving ornamental value.

Journal

Tropical Plant BiologySpringer Journals

Published: Mar 1, 2022

Keywords: Anthurium; APRR2-like gene; Photosynthetic pigment; Abiotic stress

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