NDLI: Stomatal and photosynthetic responses ofCichorium intybus leaves to sulfur dioxide treatment at different stages of plant development

Content Provider	Springer Nature Link
Author	Dhir, Bhupinder Siddiqi, Tariq Omar Iqbal, Muhammad
Copyright Year	2001
Abstract	Fifty-day-oldCichorium intybus Linn, plants were exposed to 1 ppm sulfur dioxide gas, 2 h per day for 7 consecutive days. Their leaves as well as those from the control plants were sampled at pre-flowering, flowering, and post-flowering stages to study their morphological, physiological, and biochemical responses to SO$_{2}$ stress. The number, dimensions, area, and biomass of leaves were less in the treated plants. Length and width of stomatal apertures on both epidermises were greater for leaves exposed to SO$_{2}$. The Stomata were longer on the adaxial epidermis, but shorter on the abaxial epidermis, except at the pre-flowering stage. Stomatal widths varied widely. Compared with the controls, the abaxial epidermis on treated leaves showed consistently lower stomatal densities as well as stomatal indices. This was also true for the adaxial epidermis during the post-flowering stage. The photosynthetic rate and stomatal conductance were reduced in the SO$_{2}$-exposed plants, but intercellular CO$_{2}$ concentrations increased at the pre-flowering stage and, subsequently, declined. Chlorophyll a, carotenoid, and total chlorophyll contents increased at the pre-flowering stage, and then decreased. The level of chlorophyllb was reduced throughout plant development compared with the untreated controls.
Starting Page	97
Ending Page	102
Page Count	6
File Format	PDF
ISSN	12269239
Journal	Journal of Plant Biology
Volume Number	44
Issue Number	2
e-ISSN	18670725
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biomass chlorophyll Cichorium intybus photosynthesis stomatal behavior Plant Sciences Plant Breeding/Biotechnology Plant Genetics & Genomics Plant Systematics/Taxonomy/Biogeography Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science

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