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

Hameed, Mansoor; Batool, Saima; Naz, Nargis; Nawaz, Tahira; Ashraf, Muhammad

doi:10.1007/s11738-012-0946-6

Cited by 29 publications

(21 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Midribs primarily consisted of large, colorless parenchyma cells that were highly vacuolated and likely functioned to store water. Hameed et al (2012) measured increases in leaf midrib thickness in Panicum antidotale Retz. with increased water availability.…”

Section: Discussionmentioning

confidence: 93%

Environmental and genetic variation in leaf anatomy among populations ofAndropogon gerardii(Poaceae) along a precipitation gradient

Olsen

Caudle

Johnson

et al. 2013

American J of Botany

View full text Add to dashboard Cite

Water availability has driven adaptive variation in leaf structure in populations of A. gerardii, particularly between sand bluestem and big bluestem. Genetically based differences in leaves of A. gerardii indicate adaptive variation and evolutionary forces differentiating sand bluestem from big bluestem. Environmental responses of A. gerardii leaves suggest an ability to adjust to drought, even in populations adapted to mesic home environments.

show abstract

Section: Discussionmentioning

confidence: 93%

Environmental and genetic variation in leaf anatomy among populations ofAndropogon gerardii(Poaceae) along a precipitation gradient

Olsen

Caudle

Johnson

et al. 2013

American J of Botany

View full text Add to dashboard Cite

show abstract

“…The longterm influence of arid environments alters leaf morphology (Gao et al 2003). Plants have evolved many leaf structural adaptations to protect against and minimize water loss under limited moisture conditions (Hameed et al 2012). Thicker plant leaves result in a higher water storage capacity, which prevents excessive transpiration and guarantees a higher WUE.…”

Section: Discussionmentioning

confidence: 99%

Influence of drought hardening on the resistance physiology of potato seedlings under drought stress

Zhang

Sun

et al. 2018

Journal of Integrative Agriculture

View full text Add to dashboard Cite

In this paper, the influence of drought hardening on the growth, development, resistance physiology, leaf microstructure and stomatal behavior of potato seedlings under drought stress was studied, and the mechanism of drought hardening improvement of potato seedling drought resistance was elucidated. We found that drought stress had several adverse effects on potato seedlings, yet drought hardening alleviated the decrease in relative water content (RWC), net photosynthetic rate (P n) and chlorophyll content and inhibited the increase in relative electric conductivity and malondialdehyde (MDA) content. Compared with contrast seedlings, drought-hardened seedlings also had enhanced root vigor, increased antioxidant enzyme activity and higher levels of abscisic acid (ABA), proline (Pro), soluble sugars and polyamines (PAs) under drought stress. In addition, the stomatal density of potato seedling leaves increased significantly, while the leaf area, stomatal size and stomatal aperture decreased with drought hardening treatment. These changes led to reduced leaf transpiration rate (T r) and improved water utilization efficiency (WUE). The changes in leaf microstructure also had a positive effect on the drought resistance of the drought-hardened potato seedlings. So it can be concluded that through increasing the content of some endogenous hormones, osmotic regulatory substances and the activities of antioxidant enzymes, the resistance physiology of drought-hardened potato seedlings was enhanced.

show abstract

“…Andropogon gerardii in the Great Plains exhibits many drought tolerant traits that allow either resistance and/or resilience in response to the abiotic stressors such as increased temperature and precipitation variability (Hoover et al, 2014b;Hoover and Rogers, 2016). Traits that are commonly correlated with drought tolerance include increased water-use efficiency (WUE), decreased leaf area (LA), higher specific root length (SRL), and lower turgor loss point (Eissenstat et al, 2000;Ripley et al, 2007;Hameed et al, 2012;Bartlett et al, 2014). Drought tolerant traits are likely not static in species with populations that span regional gradients, as there is adaptive benefit for greater trait variability in an environment that experiences high climate variability (Chapin, 1980;Avolio and Smith, 2013;Funk et al, 2017).…”

Section: Plant Functional Traits Reflect Ecophysiological Processesmentioning

confidence: 99%

Intraspecific Trait Variability in Andropogon gerardii, a Dominant Grass Species in the US Great Plains

2018

View full text Add to dashboard Cite

The climatic conditions in the North American Great Plains are highly variable, characteristic of an inter-continental climate. Antecedent climate history has impacted the flora of Great Plains grasslands, resulting in high species richness as well as dominance by only a few grass species, such as Andropogon gerardii. While the productivity of A. gerardii is well described, the individual physiological, and morphological characteristics that confer species dominance over wide spatial gradients are not clearly understood. We performed a literature search to assess intra-specific trait variability of A. gerardii from as many locations as possible. Ultimately, only 13 locations in the Great Plains have reported common plant functional traits (PFTs) for this species. To best represent site-specific climate conditions, plant functional trait data (8 PFTs) were collected from literature reporting ambient growing conditions, and excluded experimental manipulations. For most PFTs, we found insufficient data to fully quantify the range of variation across the geographical extent of A. gerardii dominance. This is surprising given that we focused on the most abundant grass in one of the most well-studied regions globally. Furthermore, trait data collected from our literature search showed a high degree of variability, but no strong relationships were observed between mean trait values and climate predictors. Our review of the literature on A. gerardii suggests a role for trait variability as a mechanism enabling the dominance of this species across large regions such as the Great Plains of North America.

show abstract

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

Cited by 29 publications

References 37 publications

Environmental and genetic variation in leaf anatomy among populations ofAndropogon gerardii(Poaceae) along a precipitation gradient

Environmental and genetic variation in leaf anatomy among populations ofAndropogon gerardii(Poaceae) along a precipitation gradient

Influence of drought hardening on the resistance physiology of potato seedlings under drought stress

Intraspecific Trait Variability in Andropogon gerardii, a Dominant Grass Species in the US Great Plains

Contact Info

Product

Resources

About