Permeability of Iris germanica’s multiseriate exodermis to water, NaCl, and ethanol

Meyer, Chris J.; Peterson, Carol A.; Steudle, Ernst

doi:10.1093/jxb/erq380

Cited by 40 publications

(41 citation statements)

References 56 publications

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“…Therefore, these tissues are referred as apoplastic barriers (Hammed et al, 2009;Meyer et al, 2011). Likewise, lower epidermal and exodermal thickness observed on higher density populations of T. angustifolia may provide higher efficiency on water and nutrients uptake, leading to higher growth potential.…”

Section: Spd (μM)mentioning

confidence: 99%

Anatomy and physiology of Cattail as related to different population densities

et al. 2015

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-The objective of this work was to evaluate the effects of the population density of Typha angustifolia plants in the anatomical and physiological characteristics. Plants were collected from populations of high density (over 50% of colonization capacity) and low density (less than 50% of colonization capacity) and cultivated under controlled greenhouse conditions. Plants from both populations were grown in plastic trays containing 4 L of nutritive solution for 60 days. At the end of this period, the relative growth rate, leaf area ratio, net assimilatory rate, root/shoot ratio, leaf anatomy, root anatomy, and catalase and ascorbate peroxidase activities were evaluated. Plants from high density populations showed increased growth rate and root/shoot ratio. Low density populations showed higher values of stomatal index and density in leaves, as well as increased palisade parenchyma thickness. Root epidermis and exodermis thickness as well as the aerenchyma proportion of high density populations were reduced, these plants also showed increased vascular cylinder proportion. Only catalase activity was modified between the high and low density populations, showing increased values in low density populations. Therefore, different Typha angustifolia plants show differences in its anatomy and physiology related to its origins on high and low density conditions. High density population plants shows increased growth capacity related to lower apoplastic barriers in root and this may be related to increased nutrient uptake capacity.Keywords: macrophytes, Typha angustifolia, morphological plasticity, plant growth, ecological plant anatomy. RESUMO -O objetivo do trabalho foi avaliar os efeitos da origem em diferentes densidades populacionais de

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Section: Spd (μM)mentioning

confidence: 99%

Anatomy and physiology of Cattail as related to different population densities

et al. 2015

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“…According to Armstrong et al (2000) and Meyer et al (2011) these structures might also lower water and nutrient uptake from the soil. As high density populations may show increased pathogen development, thicker apoplastic barriers may reduce pathogens flux from roots to shoots of T. angustifolia.…”

Section: Discussionmentioning

confidence: 99%

Anatomical traits related to stress in high density populations of Typha angustifolia L. (Typhaceae)

et al. 2017

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Some macrophytes species show a high growth potential, colonizing large areas on aquatic environments. Cattail (Typha angustifolia L.) uncontrolled growth causes several problems to human activities and local biodiversity, but this also may lead to competition and further problems for this species itself. Thus, the objective of this study was to investigate anatomical modifications on T. angustifolia plants from different population densities, once it can help to understand its biology. Roots and leaves were collected from natural populations growing under high and low densities. These plant materials were fixed and submitted to usual plant microtechnique procedures. Slides were observed and photographed under light microscopy and images were analyzed in the UTHSCSA-Imagetool software. The experimental design was completely randomized with two treatments and ten replicates, data were submitted to one-way ANOVA and Scott-Knott test at p<0.05. Leaves from low density populations showed higher stomatal density and index. These modifications on stomatal characteristics were more evident on the leaf abaxial surface. Plants from low density populations showed thicker mesophyll and higher proportion of aerenchymal area. Roots from low density populations showed a higher proportion of the vascular cylinder. Whereas, plants from higher density populations showed greater thickness of the endodermis, exodermis, phloem and root cortex. Higher density populations showed a higher proportion of aerenchymal gaps in the root cortex. Therefore, cattail plants from populations growing under high density population show anatomical traits typical of plants under stress, which promotes the development of less functional anatomical modifications to aquatic environments.Keywords: anatomical plasticity, cattail, macrophytes, plant handling, eutrophication, stress. Características anatômicas relacionadas ao estresse em altas densidades populacionais de Typha angustifolia L. (Typhaceae)

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“…see Seago and Marsh (1989) and Seago et al (1999); for work on Phragmites australis see Armstrong et al (2000) and Soukup et al (2002Soukup et al ( , 2007.] But, such comprehensive research has been conducted recently on roots of I. germanica (Meyer et al , 2011. When I. germanica roots are grown in well-drained soil, MEX maturation (i.e., the concurrent deposition of Casparian bands and suberin lamellae) begins 10 mm from the root tip.…”

Section: Introductionmentioning

confidence: 99%

“…Every cell of the mature MEX is encrusted with a suberin lamella-there are no passage cells ). This thick and suberized MEX reduces the rate of radial water flow and prevents NaCl from entering the root (Meyer et al 2011). Previously, Zeier and Schreiber (1998) calculated the total yield of aliphatic suberin in I. germanica's MEX (approximately 40 lg mg -1 ).…”

Section: Introductionmentioning

confidence: 99%

“…The SPAD is rich in x-hydroxy fatty acids, a,x-dicarboxylic acids and intercalated waxes, but the relative amounts of these compounds can vary among species (Kolattukudy and Dean 1974;Kolattukudy 1980Kolattukudy , 1984Holloway 1983;Matzke and Riederer 1991;Bernards and Lewis 1998, and references therein;Schreiber 1998, 1999;Zeier et al 1999a, b;Pereira 2000a, Graça andPereira 2000b). The lipophilic nature of the SPAD, along with its location between the primary cell wall and plasma membrane (Bernards 2002), establishes it as a structure restrictive to radial water and solute transport through the transcellular pathway (Kolattukudy and Dean 1974;Soliday et al 1979;Vogt et al 1983;Evert et al 1985;Zimmermann et al 2000;Hose et al 2001;Schreiber et al 2005;Meyer et al 2011). Such fundamental information has provided a basis for continued research into understanding suberin biosynthesis.…”

Section: Introductionmentioning

confidence: 99%

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A comparison of suberin monomers from the multiseriate exodermis of Iris germanica during maturation under differing growth conditions

Meyer

Peterson

Bernards

2011

Planta

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Iris germanica roots develop a multiseriate exodermis (MEX) in which all mature cells contain suberin lamellae. The location and lipophilic nature of the lamellae contribute to their function in restricting radial water and solute transport. The objective of the current work was to identify and quantify aliphatic suberin monomers, both soluble and insoluble, at specific stages of MEX development and under differing growth conditions, to better understand aliphatic suberin biosynthesis. Roots were grown submerged in hydroponic culture, wherein the maturation of up to three exodermal layers occurred over 21 days. In contrast, when roots were exposed to a humid air gap, MEX maturation was accelerated, occurring within 14 days. The soluble suberin fraction included fatty acids, alkanes, fatty alcohols, and ferulic acid, while the suberin poly(aliphatic) domain (SPAD) included fatty acids, α,ω-dioic acids, ω-OH fatty acids, and ferulic acid. In submerged roots, SPAD deposition increased with each layer, although the composition remained relatively constant, while the composition of soluble components shifted toward increasing alkanes in the innermost layers. Air gap exposure resulted in two significant shifts in suberin composition: nearly double the amount of SPAD monomers across all layers, and almost three times the alkane accumulation in the first layer. The localized and abundant deposition of C18:1 α,ω-dioic and ω-OH fatty acids, along with high accumulation of intercalated alkanes in the first mature exodermal layer of air gap-exposed roots indicate its importance for water retention under drought compared with underlying layers and with entire layers developing under water.

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Permeability of Iris germanica’s multiseriate exodermis to water, NaCl, and ethanol

Cited by 40 publications

References 56 publications

Anatomy and physiology of Cattail as related to different population densities

Anatomy and physiology of Cattail as related to different population densities

Anatomical traits related to stress in high density populations of Typha angustifolia L. (Typhaceae)

A comparison of suberin monomers from the multiseriate exodermis of Iris germanica during maturation under differing growth conditions

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