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stomatal aperture. Using individual or a small number of plants within individual pots is far more likely to be accepted for use in homes and offices than plant biofiltration walls or large filtration systems (Steinberg et al., 2005) in that the former is

porometer chamber. Measurements were conducted in less than 60 s to ensure the stomatal aperture was unchanged. EL was determined as described by Blum and Ebercon (1981) , and reported as the percentage of the total electrolytes that leaked from cells

of water transpired by the plant is directly proportional to the water available for its development. Greater water availability from T1 favored stomatal aperture and transpiration, a process essential to the carbon assimilation, which facilitated the

possible role of ABA in regulating ion homeostasis under salinity. ABA regulates K + fluxes, K + channels, and membrane potential in roots cells; it also is well known to regulate ion transport in guard cells, which regulate stomatal aperture ( Roberts

and fourth leaf nodes and 70% reduction in P n in the fifth node but no difference in stomatal aperture or size compared with controls under microscopic examination. It may be that the leaf stomatal response in trees with optimal Mn (and therefore

is accompanied by an increase in the IAA content ( Tang and Zheng, 2008 ; Weiler et al., 1981 ). ABA plays a regulatory role in controlling stomatal aperture under heat stress ( Strivastava, 2002 ). Rapid ABA accumulation has been observed when

leaves is negatively correlated with stomatal aperture ( Mahdieh and Mostajeran, 2009 ; Walton, 1980 ), thus limiting water lost as a result of transpiration ( Franks and Farquhar, 2001 ; Jiang and Hartung, 2008 ). Once a drought-stressed plant is

images of leaf epidermis showing stomatal aperture of tall fescue leaves in well-watered plants with ambient CO 2 concentration (400 μmol·mol −1 ) ( A ), drought-stressed plants (10 d) with ambient CO 2 concentration ( B ), well-watered plants with

( Martinez et al., 2003 ). Potassium is believed to be involved in maintaining turgor of guard cells and facilitating stomatal aperture ( Taiz and Zeiger, 1998 ). Recovery of g Sws/ww and thus recovery of Pn ws/ww in the second stage ( Fig. 3 ) could be

between irrigated and nonirrigated lemon balm plants. However, water potential of the water-stressed plants remained relatively constant for 2 weeks due to the significant reduction of leaf stomatal aperture. In our case, the nonirrigated plants were not