RT Journal Article
SR Electronic
A1 Gupta, S. M.
A1 Agarwal, A.
A1 Dev, B.
A1 Kumar, K.
A1 Prakash, O.
A1 Arya, M. C.
A1 Nasim, M.
T1 Assessment of photosynthetic potential of indoor plants under cold stress
JF Photosynthetica
YR 2016
VO 54
IS 1
SP 138
OP 142
DO 10.1007/s11099-015-0173-7
UL https://ps.ueb.cas.cz/artkey/phs-201601-0018.php
AB Photosynthetic parameters including net photosynthetic rate (P &lt;sub&gt;N&lt;/sub&gt;), transpiration rate (E), water-use efficiency (WUE), and stomatal conductance (g &lt;sub&gt;s&lt;/sub&gt;) were studied in indoor C&lt;sub&gt;3&lt;/sub&gt; plants Philodendron domesticum (Pd), Dracaena fragans (Df), Peperomia obtussifolia (Po), Chlorophytum comosum (Cc), and in a CAM plant, Sansevieria trifasciata (St), exposed to various low temperatures (0, 5, 10, 15, 20, and 25°C). All studied plants survived up to 0°C, but only St and Cc endured, while other plants wilted, when the temperature increased back to room temperature (25°C). The P &lt;sub&gt;N&lt;/sub&gt; declined rapidly with the decrease of temperature in all studied plants. St showed the maximum P &lt;sub&gt;N&lt;/sub&gt; of 11.9 μmol m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; at 25°C followed by Cc, Po, Pd, and Df. E also followed a trend almost similar to that of P &lt;sub&gt;N&lt;/sub&gt;. St showed minimum E (0.1 mmol m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt;) as compared to other studied C&lt;sub&gt;3&lt;/sub&gt; plants at 25°C. The E decreased up to ≍4-fold at 5 and 0°C. Furthermore, a considerable decline in WUE was observed under cold stress in all C&lt;sub&gt;3&lt;/sub&gt; plants, while St showed maximum WUE. Similarly, the g &lt;sub&gt;s&lt;/sub&gt; also declined gradually with the decrease in the temperature in all plants. Among C&lt;sub&gt;3&lt;/sub&gt; plants, Pd and Po showed the maximum g &lt;sub&gt;s&lt;/sub&gt; of 0.07 mol m&lt;sup&gt;-2&lt;/sup&gt; s&lt;sup&gt;-1&lt;/sup&gt; at 25°C followed by Df and Cc. However, St showed the minimum g &lt;sub&gt;s&lt;/sub&gt; that further decreased up to ∼4-fold at 0°C. In addition, the content of photosynthetic pigments [chlorophyll a, b, (a+b), and carotenoids] was varying in all studied plants at 0°C. Our findings clearly indicated the best photosynthetic potential of St compared to other studied plants. This species might be recommended for improving air quality in high-altitude closed environments.