Vanessa Celiz - Academia.edu (original) (raw)
Papers by Vanessa Celiz
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
<p>Measurements were performed 2, 24, 48, 120 and 192 h after cold treatment. Values are me... more <p>Measurements were performed 2, 24, 48, 120 and 192 h after cold treatment. Values are means ± standard errors (n = 45).</p
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
PLoS ONE, 2012
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.
<p>Measurements were performed 2, 24 and 48 h after cold treatment. Values are means ± stan... more <p>Measurements were performed 2, 24 and 48 h after cold treatment. Values are means ± standard errors (n = 27).</p
PLoS ONE, 2012
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
<p>Measurements were performed 2, 24, 48, 120 and 192 h after cold treatment. Values are me... more <p>Measurements were performed 2, 24, 48, 120 and 192 h after cold treatment. Values are means ± standard errors (n = 45).</p
<p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), ... more <p>Significant results at P≤0.05 (*), P≤0.01 (**), P≤0.001 (***) and not significant (ns), respectively.</p
PLoS ONE, 2012
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.
<p>Measurements were performed 2, 24 and 48 h after cold treatment. Values are means ± stan... more <p>Measurements were performed 2, 24 and 48 h after cold treatment. Values are means ± standard errors (n = 27).</p
PLoS ONE, 2012
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.
Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To inve... more Grapevine flower development and fruit set are influenced by cold nights in the vineyard. To investigate the impact of cold stress on carbon metabolism in the inflorescence, we exposed the inflorescences of fruiting cuttings to chilling and freezing temperatures overnight and measured fluctuations in photosynthesis and sugar content. Whatever the temperature, after the stress treatment photosynthesis was modified in the inflorescence, but the nature of the alteration depended on the intensity of the cold stress. At 4uC, photosynthesis in the inflorescence was impaired through non-stomatal limitations, whereas at 0uC it was affected through stomatal limitations. A freezing night (23uC) severely deregulated photosynthesis in the inflorescence, acting primarily on photosystem II. Cold nights also induced accumulation of sugars. Soluble carbohydrates increased in inflorescences exposed to 23uC, 0uC and 4uC, but starch accumulated only in inflorescences of plants treated at 0 and 23uC. These results suggest that inflorescences are able to cope with cold temperatures by adapting their carbohydrate metabolism using mechanisms that are differentially induced according to stress intensity.