Specific leaf area is modulated by nitrogen via changes in primary metabolism and parenchymal thickness in pepper

Silva, Lucas de Ávila; Omena-García, Rebeca P.; Condori-Apfata, Jorge A.; Costa, Paulo Mafra de Almeida; Silva, Natália Machado; DaMatta, Fábio M.; Zsögön, Agustín; Araújo, Wagner L.; Picoli, Edgard Augusto de Toledo; Sulpice, Ronan; Nunes‐Nesi, Adriano

doi:10.1007/s00425-020-03519-7

Cited by 10 publications

(9 citation statements)

References 60 publications

(86 reference statements)

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“…A presença de tricomas nas folhas pode levar a redução na perda de água pela transpiração, pois estas estruturas proporcionam um aumento da umidade do ar diretamente em contato com a superfície da folha, restringindo a perda de vapor de água dos estômatos para a atmosfera (Crang et al, 2018). Os tricomas também atuam na proteção contra a herbivoria e no aumento da refletância da radiação solar contribuindo na diminuição da temperatura da folha, evitando a saturação de enzimas (Evert, 2006;Raven et al, 2014;Lima 2021).…”

Section: Sclerolobium Paniculatumunclassified

“…A presença de tecido esclerenquimático desenvolvido na nervura central é uma característica marcante em X. aromatica, o sistema vascular é totalmente circundado por uma bainha esclerenquimática fibrosa, o floema é disposto em um semi-arco descontínuo, separado por células esclerenquimáticas (Figura 5-A e E). Este tipo de esclerênquima fibroso é empregado, principalmente, na proteção do floema, e exerce como função secundária a sustentação estrutural das folhas (Crang et al, 2018;Rashid et al, 2021).…”

Section: Xylopia Aromaticaunclassified

“…Arranjos mais compactos dos tecidos parenquimáticos podem minimizar a perda de água, atenuar a luminosidade incidente e impedir que haja uma murcha rápida, sendo uma estratégia importante principalmente em folhas sem tricomas (Rotondi et al, 2003;Cavalcanti, 2017). Numerosos cristais de oxalato de cálcio do tipo drusas ocorrem por todo o mesofilo e nervura central de T. guianensis (Figura 6-B), estes compostos parecem exercer um papel central em restringir a palatabilidade das folhas fazendo com que os animais as evitem (Raven et al, 2014;Crang et al, 2018). A ação destes cristais prismáticos é puramente mecânica, causando efeitos abrasivos sobre os apêndices bucais e mucosas dos insetos, em alguns casos particulares, onde há outra fonte de alimento, pode induzir preferência alimentar dos herbívoros, inclusive os mamíferos, devido a coceira e irritação dolorosa (Paiva, 2021).…”

Section: Tapirira Guianensisunclassified

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Aspectos Ecológicos, Funcionais e Anatômicos de Três Espécies Lenhosas de Cerradão

Reis

Miranda

Machida

et al. 2023

Rev. Bras. Geog. Fis.

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O cerradão é uma fitofisionomia do Cerrado estruturalmente semelhante a uma floresta, mas que apresenta espécies com características escleromórficas típicas das formações savânicas. Além de ser um ambiente interessante para se investigar espécies com elevada variabilidade intraespecífica, o cerradão ainda se destaca de outras fitofisionomias do bioma Cerrado em termos de sequestro de carbono aéreo. Objetivamos descrever e comparar aspectos ecológicos, funcionais e anatômicos de três espécies de cerradão, bem como, relacionar tais aspectos com a alocação de carbono na porção aérea da biomassa. Para isso selecionou-se espécies que se destacaram em termos de biomassa aérea lenhosa em uma área de cerradão em Palmeiras de Goiás, a saber: Sclerolobium paniculatum Vogel, Tapirira guianensis Aubl. e Xylopia aromatica (Lam.) Mart. Para cada espécie foram amostrados 10 indivíduos e destes coletados atributos funcionais referentes ao caule, folha e anatomia foliar. As características das três espécies analisadas neste estudo indicaram duas linhas de estratégias ecológicas: estratégias escleromórficas e florestais. As duas primeiras espécies mencionadas apresentaram atributos que podem favorecer a fixação de carbono na biomassa aérea, como valores mais altos de densidade média da madeira e diâmetro da base. Xylopia aromatica apresentou indivíduos com aspectos tipicamente escleromórficos, apresentando adaptações a sazonalidade, intensidade luminosa e proteção ao fogo.Palavras-chave: Cerrado, Biomassa aérea, Atributos funcionais Ecological, functional and anatomical aspects of three woody species of cerradão ABSTRACT Ecological, Functional and Anatomical Aspects of Three Woody Species from the CerradoThe cerradão is a vegetation type of the Cerrado biome that is structurally similar to a forest, but with species with scleromorphic characteristics typical of savannah formations. In addition to being an interesting environment to investigate species with high intraspecific variability, the cerradão also stands out from other physiognomic forms of the Cerrado biome in terms of aerial carbon sequestration. We aimed to describe and compare ecological, functional and anatomical aspects of three cerradão species, as well as to relate these aspects with carbon allocation in the aerial portion of the biomass. For this, we selected species that stood out in the aerial woody biomass in an area of cerradão in Palmeiras de Goiás, namely: Sclerolobium paniculatum Vogel, Tapirira guianensis Aubl. and Xylopia aromatica (Lam.) Mart. For each species, 10 individuals were sampled and functional traits of the stem, leaf and leaf anatomy were collected. The characteristics of the three species analysed in this study indicated two lines of ecological strategies: scleromorphic and forest strategies. The first two mentioned species has traits that may facilitate carbon fixation in the aerial biomass, such as higher values of average wood density and diameter of the trunk base. Xylopia aromatica, presented individuals with typically scleromorphic aspects, showing adaptations to seasonality

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Section: Sclerolobium Paniculatumunclassified

Section: Xylopia Aromaticaunclassified

Section: Tapirira Guianensisunclassified

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Aspectos Ecológicos, Funcionais e Anatômicos de Três Espécies Lenhosas de Cerradão

Reis

Miranda

Machida

et al. 2023

Rev. Bras. Geog. Fis.

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“…SLA, which is a measure of thickness of the leaf, is a key trait explaining growth variations of plant species under different environments. N supply is an important factor that determines SLA (Koch et al, 1988;de Ávila Silva et al, 2021). It was reported that N-deficient wild radish plants had higher SLA compared with those grown under N-sufficient conditions (Koch et al, 1988).…”

Section: Productivity Of Shoot and Root And Leaf Growthmentioning

confidence: 99%

“…It was reported that N-deficient wild radish plants had higher SLA compared with those grown under N-sufficient conditions (Koch et al, 1988). In the study with pepper (Capsicum annuum), de Ávila Silva et al (2021) found that SLA decreased in response to increased N supply. In this study, compared with M. crystallinum grown with full N, 0 N plants had significantly lower SLA.…”

Section: Productivity Of Shoot and Root And Leaf Growthmentioning

confidence: 99%

Impacts of Reduced Nitrate Supply on Nitrogen Metabolism, Photosynthetic Light-Use Efficiency, and Nutritional Values of Edible Mesembryanthemum crystallinum

Qin

2021

Front. Plant Sci.

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Mesembryanthemum crystallinum (common ice plant), as a nutritious ready-to-eat salad in Singapore, has become popular in recent years. However, basic data about the impacts of NO3– supply on its NO3– accumulation and nutritional quality are lacking. In this study, all plants were first grown indoor hydroponically in 10% artificial seawater (ASW) with modified full-strength Netherlands Standard Composition nutrient solution for 11 days, before transferring them to different reduced NO3– solutions. All plants grew well and healthy after 7 days of treatment. However, plants grown with 3/4 N and 1/2 N were bigger with higher shoot and root fresh weight (FW), greater leaf number, and total leaf area (TLA) than those grown with full nitrogen (N), 1/4 N, and 0 N. Mesembryanthemum crystallinum grown with full N, 3/4 N, and 1/4 N had similar specific leaf area (SLA), while 0 N plants had significantly lower SLA. All plants had similar leaf succulence (LS). However, leaf water content (LWC) was lower, while leaf dry matter accumulation (LDMC) was higher in 0 N plants after 7 days of treatment. Compared with plants grown with full N, shoot NO3– concentrations in 3/4 N, 1/2 N, and 1/4 N plants were constant or slightly increased during the treatments. For 0 N plants, shoot NO3– concentration decreased significantly during the treatment compared with other plants. Shoot NO3– accumulation was associated with nitrate reductase activity (NRA). For instance, after 7 days of treatment, shoot NO3– concentration and NRA on a FW basis in 0 N plants were, respectively, 45 and 31% of full N plants. After transferring full N to 0 N for 7 days, all M. crystallinum had higher chlorophyll (Chl) content coupled with higher electron transport rate (ETR) and higher effective quantum yield of PSII, while full N plants had higher non-photochemical quenching (NPQ). The 0N plants had much higher concentrations of proline, total soluble sugar (TSS), and total ascorbic acid (ASC) than other plants. In conclusion, totally withdrawing NO3– from the growth media prior to harvest could be one of the strategies to reduce shoot NO3– concentration. Reduced NO3– supply further enhanced nutritional values as concentrations of proline, TSS, and ASC were enhanced markedly in M. crystallinum plants after transferring them from full N to 0 N.

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Nitrogen Modifies the Leaf Anatomy and the Antioxidant System of Cotton in Irrigated and Rainfed Cultivation

Paixão-Daruichi,

Junior,

Santos de Camargos

et al. 2024

J Plant Growth Regul

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Specific leaf area is modulated by nitrogen via changes in primary metabolism and parenchymal thickness in pepper

Abstract: Main conclusion Nitrogen promotes changes in SLA through metabolism and anatomical traits in Capsicum plants.

Cited by 10 publications

References 60 publications

Aspectos Ecológicos, Funcionais e Anatômicos de Três Espécies Lenhosas de Cerradão

Aspectos Ecológicos, Funcionais e Anatômicos de Três Espécies Lenhosas de Cerradão

Impacts of Reduced Nitrate Supply on Nitrogen Metabolism, Photosynthetic Light-Use Efficiency, and Nutritional Values of Edible Mesembryanthemum crystallinum

Nitrogen Modifies the Leaf Anatomy and the Antioxidant System of Cotton in Irrigated and Rainfed Cultivation

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