Increase of photosynthesis and starch in potato under elevated CO2 is dependent on leaf age

Foliar chemical composition of two oak species grown in a free-air enrichment system with elevated O₃ and CO₂

“…Norby and Zak, 2011). This may be attributed to a feedback mechanism which reduces the sucrose synthesis in the cytosol; as a result, triose phosphate is exported from the chloroplast, finally stimulating starch accumulation in the chloroplast (Sharkey, 1985;Katny et al, 2005). Net photosynthetic rate was decreased by eO 3 but this reduction was slightly recovered by e(O 3 + CO 2 ) at the 1 st flush and by eCO 2 at the 2 nd flush for Qm;…”

Effects of elevated CO2 concentration on growth and photosynthesis of Chinese yam under different temperature regimes

“…Uniform plants were transferred into plastic pipes (50.5 cm long, 10.5 cm inner diameter; one plant/pipe) filled with the same type Shimono et al, 2009), wheat (Nonhebel, 1993;Valizadeh et al, 2014), and sorghum (Prasad et al, 2006;Wall et al, 2001), or grain legumes such as soybean (Kumagai & Sameshima, 2014;Tacarindua et al, 2013) and peanut (Newman et al, 2005). Fewer studies have been conducted on the potential effects of climate change on root and tuber crops such as potato (Chen & Setter, 2012;Craigon et al, 2002;Katny et al, 2005) and cassava (Fernandez et al, 2002;Gleadow et al, 2009). In the case of yam, a small number of statistical analyses on the relationship between climatic data and yam yield in Africa (Ike, 2012;Zakari et al, 2014) as well as simulation studies based on models such as CROPSYSTVB-Yam and EPIC-Yam (Marcos et al, 2011;Srivastava & Gaiser, 2010;Srivastava et al, 2012) have been conducted but no experiments related to the effects of elevated [CO 2 ] have been performed in yam (Raymundo et al, 2014), including Chinese yam.…”

Elevated atmospheric CO2 affected photosynthetic products in wheat seedlings and biological activity in rhizosphere soil under cadmium stress

“…Soluble sugar content was determined according to Dubois et al (1956). Soluble proteins were extracted as described by Katny et al (2005), and soluble protein content was determined according to Bradford (1976). Soluble amino acids were analyzed using the ninhydrin colorimetric method (Moore and Stein 1954).…”

“…Chen et al (2014) found that Cd stress increased fungi abundance in unplanted soils under elevated CO 2 , which was in contrast to our results and was probably due to the effects of plants on soil microorganisms in our study. Because elevated CO 2 can affect concentrations of starch, sugar, and nonstructural carbohydrates in various plant species (Katny et al 2005), the degree to which elevated CO 2 modifies primary production and the chemistry of root exudates should have direct effects on soil microorganisms. The stimulatory effect of elevated CO 2 on bacteria at low soil Cd concentrations was caused by increased availability of substrates in the rhizosphere (Fig.…”