Leaf epicuticular wax content changes under different rainfall regimes, and its removal affects the leaf chlorophyll content and gas exchanges of Aspidosperma pyrifolium in a seasonally dry tropical forest

Medeiros, Camila Dias; Falcão, Hiram Marinho; Almeida-Cortez, Jarcilene S.; Santos, Déborah Yara Alves Cursino dos; Oliveira, Antônio Fernando Morais de; Santos, Mariana

doi:10.1016/j.sajb.2017.03.033

Cited by 30 publications

(27 citation statements)

References 49 publications

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“…Epicuticular wax reduces radiation and cuticular transpiration as an adaptation to stress conditions (Mohammadian et al, 2007). Many studies showed that epicuticular wax decreases water loss from leaves and thus contribute drought tolerance (Figueiredo et al, 2015;Medeiros et al, 2017). We determined wax content of eight cherry cultivars and Regina had the highest wax content while the lowest values were found in Early Lorry and Sweetheart.…”

Section: Discussionmentioning

confidence: 97%

Evaluation of Leaf Properties of Eight Cherry Cultivars Grafted onto Maxma 14 Rootstock

Aras¹,

Keleş²

2019

JAS

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The study was conducted in order to assess the leaf properties of different sweet cherry varieties grafted onto MaxMa 14 rootstock. The experiment was arranged in a randomized plot desing with three replicates of five plants per replication. The soil analyses showed that the soil properties of experiment site were found as moderate alkaline, low amount of organic material, N, P, Zn and Mn. The soil characteristics may be sub-optimum for cherry growing. According to our results, Kordia had the highest SPAD value (37.86) among the cultivars. Samba, Regina, Kordia and 0900 Ziraat cultivars had the highest anthocyanin contents. The highest stomatal conductance was in 0900 Ziraat cv followed by Sweetheart. Samba had greater leaf area (53.25 cm2) compared to other cultivars. The highest LRWC was obtained with Lorry Bloom. Epicuticular was content of Regina leaves was higher among the cultivars. The results of the present study provide useful informations about how the cherry scions grafted onto MaxMa 14 response to environmental challenges in nature. The identified leaf properties are valuable targets for physiological studies related with environmental stresses.

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Section: Discussionmentioning

confidence: 97%

Evaluation of Leaf Properties of Eight Cherry Cultivars Grafted onto Maxma 14 Rootstock

Aras¹,

Keleş²

2019

JAS

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“…Cuticular wax is important for gas exchange in plants of semiarid regions (Figueiredo et al 2012(Figueiredo et al , 2015Medeiros et al 2017). The previous studies, under semiarid conditions, were focused on dominant deciduous plants phenology, which is the main mechanism of escape during dry seasons Markesteijn 2008, Lima et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Among cuticle wax layers, epicuticular waxes (EW) are the last interface between leaf and atmosphere. Thus, it is important for physiology and ecology of plants (Figueiredo et al 2012(Figueiredo et al , 2015Medeiros et al 2017). The EW controls diffusion and reflection, and makes tolerable a radiation intensity reaching active photosystems in the mesophyll (Riederer 2006).…”

Section: Introductionmentioning

confidence: 99%

Changes in foliar epicuticular wax and photosynthesis metabolism in evergreen woody species under different soil water availability

Pereira¹,

Figueiredo-Lima²,

Oliveira³

et al. 2019

Photosynt.

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Epicuticular waxes (EW) are important for plant physiology as a protective barrier against water loss. Thus, the main goal of this study was to evaluate the ecophysiological performance of Cynophalla flexuosa, an evergreen woody species, under different foliar EW contents. The study was conducted during three periods throughout the year in a seasonally dry tropical forest area. The xylem water potential decreased to 70% at midday. The main EW components were n-alkane chains, effective in keeping the cuticle impermeability. We analyzed intact leaves and leaves with EW removed. C. flexuosa did not alter its photosynthetic performance throughout the day in leaves where EW was removed, except under the lowest soil water balance. Furthermore, foliar biochemical metabolism activity also was maintained. Thus, photochemical and gas-exchange values showed a high resilience, although soil water availability decreased. These findings highlight that this evergreen woody species performed under semiarid conditions with high foliar dynamic traits.

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“…Uma baixa disponibilidade hídrica no solo é um fator limitante para o crescimento e desenvolvimento das espécies em todo o mundo. Essa condição limitante para a sobrevivência parece atuar como um filtro ambiental, principalmente em florestas tropicais secas, ocasionando morte das espécies e mudança na paisagem local [3].…”

Section: Introductionunclassified

“…é uma espécie de ampla distribuição geográfica, com maior ocorrência no bioma Caatinga. No entanto, estudos envolvendo a fisiologia e crescimento inicial da A. pyrifolium são escassos, destacando-se trabalhos referentes a aspectos morfológicos [10,3], eficiência quântica [11] e germinação [12]. Embora os efeitos negativos do déficit hídrico sobre as plantas sejam bastante conhecidos [13,14,15,16], acredita-se que os mecanismos utilizados por muitas espécies ocorrentes na Caatinga ocorrem com intensidades variáveis e ainda são pouco estudados.…”

Section: Introductionunclassified

Respostas fisiológicas de mudas de Aspidosperma pyrifollium (Apocynaceae) à ciclos de suspensão de rega

Freitas

Silva

2018

Sci. Plena

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O objetivo do presente trabalho foi avaliar o crescimento e desenvolvimento inicial de plantas jovens de Aspidosperma pyrifolium Mart. quando submetidas a déficit hídrico em casa de vegetação. O delineamento experimental foi inteiramente casualizado, com três tratamentos hídricos [rega diária como controle (C) e intervalos de sete (E-7) e quatorze dias (E-14) entre regas], com onze repetições por tratamento, durante 98 dias. Foram avaliados altura, diâmetro do caule, número de folhas, teor relativo de água (TRA), tolerância protoplasmática, clorofila, área foliar e produção de matéria seca. Houve diferença significativa entre os tratamentos. As plantas estressadas se desenvolveram melhor que o tratamento controle em praticamente todas as variáveis observadas. Não houve diferença significativa para o TRA e índice de clorofila. Os resultados demonstram que A. pyrifolium não sofre alterações morfofisiológicas significativas quando submetidas a seca intermitente. Na verdade, o estresse parece atuar como um promotor de crescimento e desenvolvimento para a espécie na fase inicial.

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Leaf epicuticular wax content changes under different rainfall regimes, and its removal affects the leaf chlorophyll content and gas exchanges of Aspidosperma pyrifolium in a seasonally dry tropical forest

Cited by 30 publications

References 49 publications

Evaluation of Leaf Properties of Eight Cherry Cultivars Grafted onto Maxma 14 Rootstock

Evaluation of Leaf Properties of Eight Cherry Cultivars Grafted onto Maxma 14 Rootstock

Changes in foliar epicuticular wax and photosynthesis metabolism in evergreen woody species under different soil water availability

Respostas fisiológicas de mudas de Aspidosperma pyrifollium (Apocynaceae) à ciclos de suspensão de rega

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