Changes in Nicotiana tabacum stem morphology due to expression of NADP-malic enzyme in drought tolerant transgenic lines

MÜLLER, G.L.; GUINDON, MARÍA FERNANDA; OITAVEN, PABLO; SEBROT, MS; SAPER, CAROLINA; OLARZAN; DRINCOVICH, MA. FABIANA

ROSARIO

Congreso; XXXIV REUNION ANUAL DE FISIOLOGÍA VEGETAL; 2023

NADP-malic enzyme (NADP-ME) has been suggested to play important roles in diverse stress Responses in plants. The integration of the plastidic nonphotosynthetic NADP-ME from Zea mays into the Nicotiana tabacum genome using KAT1 promoter, which drives expression to both guard cells and companion cells of sieve elements has generated lines with enhanced yield and earlier flowering under normal and drought conditions. The role of stem in these drought-tolerant plants has hardly been studied, even though it plays a vital role transporting water and other products