Morphological plasticity of plant stomata: Why do they change?

2014 Fiscal Year Final Research Report

• Project/Area Number: 25660277
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Environmental agriculture(including landscape science)
• Research Institution: Nagoya University
• Principal Investigator: YANO Katsuya 名古屋大学, 生命農学研究科, 准教授 (00283424)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 気孔 / リン / 窒素 / 二酸化炭素 / 炭素同位体比

Outline of Final Research Achievements

Stomatal morphology of new leaves is changed in accordance with the growth environment in which the mature leaves encountered. I tested a hypothesis such stomatal changes in new leaves have a significance to rectify the Rubisco-CO2 demand-supply balance in mature leaves. The Rubisco-CO2 demand-supply balance affects 13C / 12C ratio of photosynthetic products and is reflected to the ratio in the younger leaves. The correlation was investigated between the ratio and stomatal morphology. Using barley, soybean, radish and sorghum, full nutrients, N- and P- treatments were prepared. There was a common property among all the plant species that stomatal density increased with nutritional deficiencies. However, the correlation between 13C / 12C ratio and stomatal morphology was not always significant.

Free Research Field

作物生態生理