NDLI: Leaf structural modifications for drought tolerance in some differentially adapted ecotypes of blue panic (Panicum antidotale Retz.)

Content Provider	Springer Nature Link
Author	Hameed, Mansoor Batool, Saima Naz, Nargis Nawaz, Tahira Ashraf, Muhammad
Copyright Year	2012
Abstract	Some ecologically different ecotypes of Panicum antidotale Retz. were evaluated for drought tolerance in relation to growth parameters and leaf structural modifications. These ecotypes were adapted to normal non-stressed (agricultural field AF, and sludge of disposal channel SDC), drought-stressed (along roadside AR), salinity-stressed (forest plantation FP), waterlogging and salinity-stressed (inside disposal channel IDC), and drought plus salinity-stressed (barren area BA). On the basis of genetic variability in leaf structural modifications, each ecotype adopted specific strategies to tolerate the extremity of drought stress. The AF and SDC ecotypes relied on water conservation and survival rather than growth and structural modifications by developing epidermis and sclerenchyma on both leaf surfaces. The AR developed xerophytic foliar characteristics in addition to maintaining growth and development under stressed conditions like thick leaves, well-developed bulliform cells, and intensive sclerification. The FP ecotype developed efficient strategy for drought tolerance such as reduced and fibrous leaves, smaller metaxylem vessels, and highly developed bulliform cells. The ecotype IDC relied more on water conservation by increasing leaf epidermal thickness and decreasing stomatal area and density. The ecotype BA showed critical structural adaptations such as thin leaves, extremely developed bulliform and reduced metaxylem area, and parenchyma extensions above vascular bundles. Based on the strategies adopted for drought tolerance, the tolerance level of these ecotypes were rated as BA > AR > FP > IDC > SDC > AF.
Starting Page	1479
Ending Page	1491
Page Count	13
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	34
Issue Number	4
e-ISSN	18611664
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-02-03
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bulliform cells Sclerification Genetic variability Panicum antidotale Drought tolerance Plant Physiology Plant Anatomy/Development Agriculture Plant Genetics & Genomics Plant Pathology Plant Biochemistry
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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