Anatomical root variations in response to water deficit: wild and domesticated common bean (Phaseolus vulgaris L)

Peña-Valdivia, Cecilia B.; Sánchez-Urdaneta, Adriana Beatriz; Rangel, Joel Meza; Muñoz, Juana Juárez; García-Nava, Rodolfo; Velázquez, Rocío

doi:10.4067/s0716-97602010000400006

Cited by 33 publications

(24 citation statements)

References 10 publications

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“…Some traits in wild P. vulgaris accessions have been associated with resistance to water stress. For example, root anatomy changes (low reductions in parenchyma cells and cell division compared with domesticated genotypes) (Peña‐Valdivia et al., 2010) as well as physiological and biochemical changes in root tissue can occur to provide tolerance to dehydration (Sánchez‐Urdaneta et al., 2003). …”

Section: Discussionmentioning

confidence: 99%

Climatic adaptation and ecological descriptors of wild beans from Mexico

Cerda-Hurtado

Máyek-Pérez

Muruaga‐Martínez

et al. 2018

Ecology and Evolution

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Despite its economic, social, biological, and cultural importance, wild forms of the genus Phaseolus are not well represented in germplasm banks, and they are at great risk due to changes in land use as well as climate change. To improve our understanding of the potential geographical distribution of wild beans (Phaseolus spp.) from Mexico and support in situ and ex situ conservation programs, we determined the climatic adaptation ranges of 29 species and two subspecies of Phaseolus collected throughout Mexico. Based on five biotic and 117 abiotic variables obtained from different databases—WorldClim, Global‐Aridity, and Global‐PET—we performed principal component and cluster analyses. Germplasm was distributed among 12 climatic types from a possible 28. The general climatic ranges were as follows: 8–3,083 m above sea level; 12.07–26.96°C annual mean temperature; 10.33–202.68 mm annual precipitation; 9.33–16.56 W/m2 of net radiation; 11.68–14.23 hr photoperiod; 0.06–1.57 aridity index; and 10–1,728 mm/month of annual potential evapotranspiration. Most descriptive variables (25) clustered species into two groups: One included germplasm from semihot climates, and the other included germplasm from temperate climates. Species clustering showed 45% to 54% coincidence with species previously grouped using molecular data. The species P. filiformis, P. purpusii, and P. maculatus were found at low‐humidity locations; these species could be used to improve our understanding of the extreme aridity adaptation mechanisms used by wild beans to avoid or tolerate climate change as well as to introgress favorable alleles into new cultivars adapted to hot, dry environments.

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Section: Discussionmentioning

confidence: 99%

Climatic adaptation and ecological descriptors of wild beans from Mexico

Cerda-Hurtado

Máyek-Pérez

Muruaga‐Martínez

et al. 2018

Ecology and Evolution

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“…The diameter of xylem vessels and transverse root area diminished in the cultivar, but in the wild common bean were not affected [12]. Stem and cortex diameter, vascular tissue thickness and xylem vessel diameter were reduced under drought stress [13][14]. Some of the above root and stem anatomical responses seem to be adaptations that enhance plant survival in hostile environments [15].…”

Section: Introductionmentioning

confidence: 99%

“…Multiple characteristics of vascular structure have been investigated, such as modifications of the vascular bundle number and area and alteration of xylem/ phloem ratio, which are thought to be involved in the resistance of the plant to environmental stresses [18]. Several studies have shown that xylem and/or phloem vessel diameter was reduced in Ctenanthe setosa and Triticum aestivum plants subjected to drought stress [2][3][4][5][6][7][8][9][10][11][12][13][14]. Thus, xylem with narrow vessels is physiologically better protected against cavitation [19].…”

Section: Introductionmentioning

confidence: 99%

“…Leaf tissues exposed to drought shows various responses. Thus, in many species such as, Ctenanthe setosa and Triticum aestivum, the entire lamina and mesophyll thickness were reduced under drought stress [2][3][4][5][6][7][8][9][10][11][12][13][14], while it was unaffected by water stress in salvia spendens and Glycine max [13][14][15][16]. Bussotti et al [17] found that limited soil moisture caused a major thickening of the mesophyll, especially in the leaf cuticle and spongy parenchyma of the beech plant, Fagus sylvatica.…”

Section: Introductionmentioning

confidence: 99%

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Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

et al. 2014

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The present study was designed to study the effect of drought on root, stem and leaf anatomy of Astragalus gombiformis Pomel. Several root, stem and leaf anatomical parameters (cross section diameter, cortex, root cortical cells, pith, leaf lamina and mesophyll thickness) were reduced under moderate to severe water deficit (20–30 days of withheld irrigation). The stele/cross section root ratio increased under moderate water deficit. The root’s and stems vascular systems showed reduced xylem vessel diameter and increased wall thickness under water deficit. In addition, the root xylem vessel density was increased in these drought conditions while it was unchanged in the stems. The stomata density was increased under prolonged drought conditions whereas the stomata size was untouched. The leaf vascular system showed reduced xylem and phloem tissue thickness in the main vein under moderate to severe water deficit. However, in the lamina the vascular tissue and the distance between vascular bundle were unaffected. Our findings suggest a complex network of anatomical adaptations such as a reduced vessel size with increased wall thickness, lesser cortical and mesophyll parenchyma formation and increased stomata density. These proprieties are required for the maintenance of water potential and energy storage under water stress which can improve the resistance of A. gombiformis to survive in arid areas.

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“…Under drought stress epidermis, cortex and xylem were decreased in common bean (Phaseolus vulgaris L.) [37]. Vessel diameters in stressed root were smaller than those in well-watered plants, and vascular tissue area was decreased by low soil moisture [38].…”

Section: Vascular Tissuementioning

confidence: 99%

Morpho-Anatomical Changes in Roots of Chickpea (Cicer arietinum L.) under Drought Stress Condition

Saeed¹,

Maqbool²,

Haseeb³

et al. 2016

JAST-B

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Chickpea (Cicer arietinum L.) is a crop cultivated in semi-arid and rainfed areas of Pakistan and it experiences terminal drought stress. In this paper, the morpho-anatomical study regarding roots of chickpea was carried out to investigate the drought adaptation strategies. Twelve cultivars of chickpea were grown in pots under drought stress of 70% and 35% field capacity in addition to control (100%). Root segments of mature chickpea plants were sectioned in 2 cm from root-shoot junction and used for making transverse sections. The development of sleeve and stele tissues and their proportion were markedly influenced by moisture availability to the root system. Roots length, fresh and dry weight, and number of secondary roots were decreased under field capacity of 70% and 35% as compared to control in 12 cultivars of chickpea. Root epidermis and cortex of CH47/04 consisted of cells with thickened walls and with 2-3 cell layers of sclerenchymatous cells below the epidermis. Increased number of medullary rays and high vascular region was observed in cultivars CH120/04, CH47/04, CH587/05 and CH87/02. Anatomical studies showed that CH47/04 was highly tolerant among 12 cultivars of chickpea, while CH587/05 and CH87/02 behaved moderately under both levels of drought stress (70% and 35% field capacity).

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Anatomical root variations in response to water deficit: wild and domesticated common bean (Phaseolus vulgaris L)

Abstract: Anatomical root variations in response to water deficit: wild and domesticated common bean (Phaseolus vulgaris L.

Cited by 33 publications

References 10 publications

Climatic adaptation and ecological descriptors of wild beans from Mexico

Climatic adaptation and ecological descriptors of wild beans from Mexico

Anatomical adaptations of Astragalus gombiformis Pomel. under drought stress

Morpho-Anatomical Changes in Roots of Chickpea (Cicer arietinum L.) under Drought Stress Condition

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