How Leaf Vein and Stomata Traits Are Related with Photosynthetic Efficiency in Falanghina Grapevine in Different Pedoclimatic Conditions

Plants

Chiara Cirillo¹  Veronica De Micco¹  Rosanna Caputo¹  Nicola Damiano¹  Carmen Arena²  Arturo Erbaggio³  Antonello Bonfante³ 

[1] Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Portici, Italy;Department of Biology, University of Naples Federico II, Via Cinthia 21-26, 80126 Napoli, Italy;Institute for Mediterranean Agricultural and Forest Systems, ISAFOM, National Research Council of Italy (CNR), P.le Enrico Fermi 1, 80055 Portici, Italy;

关键词: climate changes;    leaf traits;    photosynthesis;    vein and stomata traits;    Vitis vinifera;   

DOI  :  10.3390/plants11111507

来源: DOAJ

【 摘 要 】

The increase in severe drought events due to climate change in the areas traditionally suitable for viticulture is enhancing the need to understand how grapevines regulate their photosynthetic metabolism in order to forecast specific cultivar adaptive responses to the changing environment. This study aims at evaluating the association between leaf anatomical traits and eco-physiological adjustments of the ‘Falanghina’ grapevine under different microclimatic conditions at four sites in southern Italy. Sites were characterized by different pedoclimatic conditions but, as much as possible, were similar for plant material and cultivation management. Microscopy analyses on leaves were performed to quantify stomata and vein traits, while eco-physiological analyses were conducted on vines to assess plant physiological adaptation capability. At the two sites with relatively low moisture, photosynthetic rate, stomatal conductance, photosystem electron transfer rate, and quantum yield of PSII, linear electron transport was lower compared to the other two sites. Stomata size was higher at the site characterized by the highest precipitation. However, stomatal density and most vein traits tended to be relatively stable among sites. The number of free vein endings per unit leaf area was lower in the two vineyards with low precipitation. We suggest that site-specific stomata and vein traits modulation in Falanghina grapevine are an acclimation strategy that may influence photosynthetic performance. Overall in-depth knowledge of the structure/function relations in Falanghina vines might be useful to evaluate the plasticity of this cultivar towards site-specific management of vineyards in the direction of precision viticulture.

【 授权许可】

Unknown