Proline accumulation and real time PCR expression analysis of genes encoding enzymes of proline metabolism in relation to drought tolerance in Andean potato

• Autorzy: Schafleitner R. , Gaudin A. , Gutierrez Rosales R. O. , Alvarado Aliaga C. A. , Bonierbale M.
• Języki publikacji: EN

Abstrakty

EN

Six potato varieties belonging to four different sub-species were submitted to drought stress during tuberization under controlled field conditions, resulting in contrasting responses of the genotypes to water stress with yield losses varying between 27 and 75%. In all clones free proline accumulated under drought, however, proline levels increased earlier in drought-susceptible varieties than in more tolerant ones. The expression of two key genes in proline metabolism, Δ¹ -pyrroline-5-carboxylate synthase and proline dehydrogenase, was monitored in the leaves of the experimental plants by r2eal time PCR 23 and 42 days after drought onset. Expression of both enzymes did not correlate with the proline levels found in leaf tissue indicating that mechanisms other than transcription participate in the regulation of proline accumulation in potato leaves.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2007
• Tom: 29
• Numer: 1
• Opis fizyczny: p.19-26,fig.,ref.

Twórcy

autor

Schafleitner R.

• International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima 12, Peru

autor

Gaudin A.

• International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima 12, Peru

autor

Gutierrez Rosales R. O.

• International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima 12, Peru

autor

Alvarado Aliaga C. A.

• International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima 12, Peru

autor

Bonierbale M.

• International Potato Center, Avenida La Molina 1895, Apartado 1558, La Molina, Lima 12, Peru

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