Sequential expression of two 1-aminocyclopropane-1-carboxylate synthase genes in response to biotic and abiotic stresses in potato (Solanum tuberosum L.) leaves

• Published in: Plant molecular biology Vol. 35; no. 6; pp. 683 - 688
• Main Authors: Schlagnhaufer, C.D. (Pennsylvania State Univ., University Park, PA (USA). Dept. of Horticulture), Arteca, R.N, Pell, E.J
• Format: Journal Article
• Language: English
• Published: Netherlands Springer Nature B.V 01-12-1997
• Subjects: ALTERNARIA SOLANI; Amino Acid Sequence; COBRE; COPPER; Copper - pharmacology; CUIVRE; ESTRES; ETHYLENE; Ethylenes - biosynthesis; ETILENO; EXPRESION GENICA; EXPRESSION DES GENES; Flowers & plants; Foliage; GENE EXPRESSION; Gene Expression Regulation, Enzymologic - drug effects; Gene Expression Regulation, Plant - drug effects; Lyases - biosynthesis; Lyases - genetics; Molecular Sequence Data; OZONE; Ozone - pharmacology; OZONO; Plant Diseases - genetics; Plant Diseases - microbiology; Plant Leaves - enzymology; Plant Leaves - genetics; Plant Leaves - metabolism; Potatoes; Signal transduction; SOLANUM TUBEROSUM; Solanum tuberosum - enzymology; Solanum tuberosum - genetics; Solanum tuberosum - metabolism; STRESS
• ISSN: 0167-4412; 1573-5028
• DOI: 10.1023/A:1005857717196

Plants produce ethylene in response to many biotic and abiotic stresses. In response to ozone the foliage of potato plants sequentially expressed two ACC synthase genes (ST-ACS4, ST-ACS5). The same expression pattern of the two genes also occurred in response to Cu2+ and infection with Alternaria solani. ST-ACS5 expression increases very rapidly reaching a maximum earlier than ST-ACS4 transcripts, after which ST-ACS5 expression declines. ST-ACS4 expression increases at a slower rate and reaches its maximum after ST-ACS5. The sequential nature of expression argues that the two genes have different signal transduction and gene regulatory mechanisms.