Impact of tank formation on distribution and cellular organization of trichomes within Guzmania monostachia rosette

Kleingesinds, Carolina Krebs; Gobara, Bruno Nobuya Katayama; Mancilha, Dioceni; Rodrigues, Maria Aurineide; Demarco, Diego; Mercier, Helenice

doi:10.1016/j.flora.2018.03.013

Cited by 18 publications

(13 citation statements)

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“…Epiphytes have developed adaptations such as poikilohydry, leaf, stem, and root succulence, and crassulacean acid metabolism (CAM) to cope with variability in water supply (Ng & Hew, 2000;Zotz & Hietz, 2001). In the family Bromeliaceae in addition to CAM photosynthesis and succulent tissues, epiphytic species have foliar trichomes specialized in the absorption of water and nutrients and may also exhibit water reservoirs at the base of its leaves (Benzing, 1990;Chaves, Leal, & de Lemos-Filho, 2015;Freschi et al, 2010;Kleingesinds et al, 2018;Martin, 1994). Regarding these traits, epiphytic bromeliads have been classified in two main life forms: atmospheric species (with lingulate to narrowly triangular leaves, densely covered by trichomes) and tank species (with long and wide leaves that form a water reservoir in the center of the rosette; Benzing, 1980).…”

Section: Introductionmentioning

confidence: 99%

“…Regarding these traits, epiphytic bromeliads have been classified in two main life forms: atmospheric species (with lingulate to narrowly triangular leaves, densely covered by trichomes) and tank species (with long and wide leaves that form a water reservoir in the center of the rosette; Benzing, 1980). These morphological differences have been linked to physiological strategies, as tank species maintain a more constant water source that partly isolates them from surrounding environmental conditions, the seasonal variation in water and light use may be more conservative, compared to the atmospheric species (Kleingesinds et al, 2018;Reyes-Garcı´a, Mejia-Chang, & Griffiths, 2012). These adaptations have allowed bromeliads to colonize habitats in a wide range of environments, from moist montane forests, coastal deserts, and Andean paramos (Benzing, 2000).…”

Section: Introductionmentioning

confidence: 99%

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Morphophysiological Plasticity in Epiphytic Bromeliads Across a Precipitation Gradient in the Yucatan Peninsula, Mexico

Cach-Pérez

Andrade

Reyes‐García

2018

Tropical Conservation Science

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Plasticity may be a key factor to determine plant survival under a changing environment as a result of climate change or land use modification. Plasticity in physiological and morphological traits was evaluated in seven epiphytic Tillandsia species (Bromeliaceae) from six vegetation communities along a precipitation gradient in the Yucatan Peninsula, Mexico. Microenvironmental conditions (air temperature and humidity, light, and vapor pressure deficit), as well as Á titratable acidity, osmotic potential, relative water content, and succulence were characterized during wet, early dry, and dry seasons. We calculated the relative distances plasticity index using physiological data from the wet and dry seasons; morphological plasticity was also calculated for foliar trichome and stomatal traits from previously published data. We found high variation in microenvironmental conditions between seasons, particularly for the tropical dry deciduous forest. The dry season had a negative effect in all physiological variables (decrease from 40% to 59% for Á titratable acidity and 10% to 38% for relative water content). The highest plasticity was registered for T. balbisiana (physiological: 0.29, anatomical: 0.18) and the lowest for T. fasciculata and T. yucatana. Nonmetric multidimensional scaling analysis separated individuals distributed in the wettest vegetation types from those distributed in the driest vegetation types, irrespective of the species, showing convergent physiological strategies to confront environmental variation. We found higher plasticity in water use traits in atmospheric species, compared to tanks and higher plasticity in general in species with wide distribution compared to those with small distribution ranges.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Morphophysiological Plasticity in Epiphytic Bromeliads Across a Precipitation Gradient in the Yucatan Peninsula, Mexico

Cach-Pérez

Andrade

Reyes‐García

2018

Tropical Conservation Science

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“…Nesse ponto os tricomas desempenham papel fundamental no suprimento de água e nutrientes, apresentando inclusive capacidade de absorver a água presente na neblina (Martorell & Ezcurra, 2007). Algumas espécies de bromélias apresentam maior densidade de tricomas na base foliar (Takahashi et al, 2007;Kleingesinds et al, 2018). Já outras espécies podem apresentar as folhas com uma distribuição mais uniforme dos tricomas, como é o caso de algumas espécies do gênero Tillandsia (Matiz et al, 2013;Males, 2016).…”

Section: O Hábito Epifítico E a Família Bromeliaceaeunclassified

“…Guzmania monostachia é uma bromélia epífita que apresenta tanque na sua fase adulta e que é induzida ao CAM idling após sete dias de déficit hídrico (Freschi et al, 2010b;Kleingesinds et al, 2018). Pode ser encontrada desde o sul da América do norte, em regiões da América central e norte da América do Sul (Pittendrigh, 1948;Smith et al, 1986;Maxwell et al, 1994).…”

Section: Guzmania Monostachia Como Modelo De Estudounclassified

“…Estudos anteriores realizados no laboratório de fisiologia do desenvolvimento vegetal (IB-USP) demonstraram a existência de uma divisão funcional nas folhas dessa bromélia em três regiões distintas (base, mediana e ápice) (Freschi et al, 2010b;Mioto & Mercier, 2013;Pereira et al, 2013;Abreu et al, 2018;Kleingesinds et al, 2018;Pikart et al, 2018).…”

Section: Guzmania Monostachia Como Modelo De Estudounclassified

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Modificações bioquímicas e moleculares ajustam o uso da energia da luz em plantas de Guzmania monostachia induzidas ao CAM por deficiência hídrica

Pikart¹

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Photosynthesis is a light-energy absorption process that results in NADPH and ATP production, which can be used to assimilate CO2 and produce carbohydrates. Stress conditions can decrease the photosynthetic rate due to stomatal closure limiting the atmospheric carbon assimilation and downregulating the capacity of light absorption. Epiphytic plants normally do not have access to CO2 uptake was null in water deficit plants. In addition, the results showed an upregulation, especially at 12:00h, of kinases transcript levels responsible for thylakoid protein phosphorylation. The increase in the phosphorylation of these proteins can induce changes in the thylakoid membrane conformation, which facilitates the linear electron transport, consequently powering the CO2 assimilation in CAM plants, particularly at the time with the major availability of this gas. The results also indicated a reduction in PSII/PSI protein proportion after 20 days of drought. As a result, the CAM induction appears to be followed by biochemical and molecular modulations adjusting the light-energy absorption and use, which could facilitate the survival of this species under stressful conditions.

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Tank formation transforms nitrogen metabolism of an epiphytic bromeliad and its phyllosphere bacteria

Stryker,

White,

Díaz‐Almeyda

et al. 2024

American J of Botany

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PremiseUp to half of tropical forest plant species grow on other plants. Lacking access to soils, vascular epiphytes have unique adaptations for mineral nutrition. Among the most distinctive is the tank growth form of certain large bromeliads, which absorb nutrients that are cycled by complex microbial communities in water trapped among their overlapping leaf bases. However, tanks form only after years of growth by juvenile plants, which must acquire nutrients differently. Understanding how nutrient dynamics change during tank bromeliad development can provide key insights into the role of microorganisms in the maintenance of tropical forest biodiversity.MethodsWe evaluated variations in plant morphology, growth, foliar nitrogen physiology, and phyllosphere bacterial communities along a size gradient spanning the transition to tank formation in the threatened species Tillandsia utriculata.ResultsSequential morphological and growth phases coincided with the transition to tank formation when the longest leaf on plants was between 14 and 19 cm. Before this point, foliar ammonium concentrations were very high, but after, leaf segments absorbed significantly more nitrate. Leaf‐surface bacterial communities tracked ontogenetic changes in plant morphology and nitrogen metabolism, with less‐diverse communities in tankless plants distinguished by a high proportion of taxa implicated in ureolysis, nitrogen fixation, and methanotrophy, whereas nitrate reduction characterized communities on individuals that could form a tank.ConclusionsCoupled changes in plant morphology, physiology, and microbiome function facilitate the transition between alternative nutritional modes in tank bromeliads. Comparing bromeliads across life stages and habitats may illuminate how nitrogen‐use varies across scales.

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Impact of tank formation on distribution and cellular organization of trichomes within Guzmania monostachia rosette

Cited by 18 publications

References 27 publications

Morphophysiological Plasticity in Epiphytic Bromeliads Across a Precipitation Gradient in the Yucatan Peninsula, Mexico

Morphophysiological Plasticity in Epiphytic Bromeliads Across a Precipitation Gradient in the Yucatan Peninsula, Mexico

Modificações bioquímicas e moleculares ajustam o uso da energia da luz em plantas de Guzmania monostachia induzidas ao CAM por deficiência hídrica

Tank formation transforms nitrogen metabolism of an epiphytic bromeliad and its phyllosphere bacteria

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