Effects of simulated acid rain on the growth, nutrition, foliar pigments and photosynthetic rates of sugar maple and white spruce seedlings

Dixon, Murray J.; Kuja, Allen

doi:10.1007/bf00477354

Cited by 10 publications

(2 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Por se tratar de espécies florestais arbóreas, é possível que a duração do experimento tenha sido insuficiente para provocar alterações no crescimento de algumas espécies, como verificado para outros poluentes (Dixon & Kuja 1995). Arndt et al (1995) classificaram as plantas de acordo com o grau de resistência ao flúor (sensível, intermediária, moderadamente resistente e resistente) indicando que alguns representantes da família Anacardiaceae apresentam resistência intermediária.…”

Section: Discussionunclassified

Flúor em chuva simulada: sintomatologia e efeitos sobre a estrutura foliar e o crescimento de plantas arbóreas

Silva¹,

Azevedo²,

Silva³

et al. 2000

Rev. bras. Bot.

View full text Add to dashboard Cite

-(Fluoride in simulated rain: symptomatology and effects on leaf structure and growth of wood plants). The objectives of this study was to characterize the effects of fluoride on seedlings and young plants of native woody species from Parque Estadual do Rio Doce (MG) and on the leaf blade structure of the most sensitive of the studied tree species. This work was carried out to gain information on diagnosing criteria for bioindication and to throw some light on the mechanisms of plant resistance and tolerance in order to assist in the revegetation programs of highly affected areas. The employed species were Gallesia gorazema Moq. ), during 20 min daily, for 10 consecutive days. Apical and marginal necrosis occurred in the leaf blades of all species just after the first simulated rain. Two days after treatment, S. dulcis, in the young plant stage, showed to be the most sensitive species by exhibiting large necrotic areas, while G. americana was the most resistant species. At the young plant stage, the species that accumulated more fluoride were also the most sensitive ones; such a relation was not observed in plants at the seedling stage. The pollutant at the level employed caused drastic alterations in the leaf blade of S. dulcis and also damaged all of its anatomical structure. The high susceptibility of S. dulcis to fluoride suggests that this species possess potential features to be employed as a bioindicator. However, for a better characterization of the responses of S. dulcis to fluoride and its usage in biomonitoring programs, more studies are required.RESUMO -(Flúor em chuva simulada: sintomatologia e efeitos sobre a estrutura foliar e o crescimento de plantas arbóreas). Os objetivos deste trabalho foram: caracterizar os efeitos do flúor em espécies arbóreas nativas, nos estádios de plântula e muda; identificar injúrias provocadas pelo flúor na estrutura da lâmina foliar da espécie mais sensível; fornecer subsídios para seleção de características a serem utilizadas na bioindicação; e contribuir com informações sobre a resistência ou tolerância das plantas, visando ao reflorestamento de áreas impactadas pela chuva com flúor. As espécies analisadas foram Gallesia gorazema Moq. ), por 10 dias consecutivos. Necroses apicais e marginais foram observadas em todas as espécies analisadas, logo após a primeira chuva simulada. S. dulcis, no estádio de muda, foi a espécie mais sensível ao flúor, pois apresentou extensas necroses com apenas dois dias de tratamento, enquanto que G. americana foi a espécie mais resistente. Nas mudas, as espécies que acumularam mais flúor foram também as que apresentaram maior sensibilidade a esse poluente; essa relação não foi verificada nas plântulas. A concentração de flúor utilizada promoveu alterações drásticas na lâmina foliar de S. dulcis com extensas áreas necrosadas, danificando toda a sua estrutura anatômica. A sensibilidade ao flúor observada em S. dulcis indica que essa espécie apresenta potencial para ser usada como bioindicadora. Entretanto, estudos detalhados serã...

show abstract

Section: Discussionunclassified

Flúor em chuva simulada: sintomatologia e efeitos sobre a estrutura foliar e o crescimento de plantas arbóreas

Silva¹,

Azevedo²,

Silva³

et al. 2000

Rev. bras. Bot.

View full text Add to dashboard Cite

show abstract

“…The saplings of G. integrifolia and the seedlings of J. princeps and S. dulcis had significantly reduced growth after treatment with simulated acid rain, compared with what has been reported for other species (Back et al 1994;Fuzhu et al 1994;Dixon and Kuja 1995;Gravano et al 1999;Nellemann and Thomsen 2001). G. integrifolia and S. dulcis can be considered less sensitive because they presented a smaller degree of leaf damage at the end of the experiment, using the percentage of leaf injury as the criterion to evaluate resistance to pollutants (Kozlowski and Pallardy 1997).…”

Section: Discussionmentioning

confidence: 62%

Effects of simulated acid rain on the growth of five Brazilian tree species and anatomy of the most sensitive species (Joannesia princeps)

et al. 2005

View full text Add to dashboard Cite

Seedlings and young saplings of some woody species were exposed to simulated low-pH acid rain, in order to develop a response screening for tropical tree species by determination of the symptoms of foliar injury and growth responses, as well as to identify anatomical alterations in the leaf blade of the most sensitive species. Gallesia integrifolia (Spreng.) Harms, Genipa americana L., Joannesia princeps Vell., Mimosa artemisiana Heringer & Paula and Spondias dulcis Forst.f. were exposed daily to 20 min of acid rain, pH 3.0, for 10 consecutive days. The degree of leaf damage and the anatomical alterations observed were efficient parameters to determine the sensitivity to acid rain. At the end of the experiment J. princeps was the most sensitive species as determined by foliar injury and seedling growth. The degree of leaf damage was similar among the seedlings, except in S. dulcis, which showed reduced percentage of foliar injury. Necrotic and chlorotic spots on the leaf blade occurred. In the most sensitive species, J. princeps, necrotic blade tissues showed accumulation of phenolic compounds, hypertrophy and collapsed cells. Most of the structural alterations were observed in the adaxial epidermis, the palisade parenchyma and spongy parenchyma and the abaxial epidermis. Long-term experiments with seedlings of S. dulcis and saplings of G. integrifolia are suggested, to characterise the response of these species that presented fewer symptoms but whose growth was affected under acid rain.

show abstract

Photosynthetic and growth responses of Schima superba seedlings to sulfuric and nitric acid depositions

Yao

Ding

et al. 2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

A continuing rise in acid deposition can cause forest degradation. In China, acid deposition has converted gradually from sulfuric acid deposition (SAD) to nitric acid deposition (NAD). However, the differing responses of photosynthesis and growth to depositions of sulfuric vs. nitric acid have not been well studied. In this study, 1-year-old seedlings of Schima superba, a dominant species in subtropical forests, were treated with two types of acid deposition SO4 (2-)/NO3 (-) ratios (8:1 and 0.7:1) with two applications (foliar spraying and soil drenching) at two pH levels (pH 3.5 and pH 2.5) over a period of 18 months. The results showed that the intensity, acid deposition type, and spraying method had significant effects on the physiological characteristics and growth performance of seedlings. Acid deposition at pH 2.5 via foliar application reduced photosynthesis and growth of S. superba, especially in the first year. Unlike SAD, NAD with high acidity potentially alleviated the negative effects of acidity on physiological properties and growth, probably due to a fertilization effect that improved foliar nitrogen and chlorophyll contents. Our results suggest that trees were damaged mainly by direct acid stress in the short term, whereas in the long term, soil acidification was also likely to be a major risk to forest ecosystems. Our data suggest that the shift in acid deposition type may complicate the ongoing challenge of anthropogenic acid deposition to ecosystem stability.

show abstract

Effects of simulated acid rain on the growth, nutrition, foliar pigments and photosynthetic rates of sugar maple and white spruce seedlings

Cited by 10 publications

References 18 publications

Flúor em chuva simulada: sintomatologia e efeitos sobre a estrutura foliar e o crescimento de plantas arbóreas

Flúor em chuva simulada: sintomatologia e efeitos sobre a estrutura foliar e o crescimento de plantas arbóreas

Effects of simulated acid rain on the growth of five Brazilian tree species and anatomy of the most sensitive species (Joannesia princeps)

Photosynthetic and growth responses of Schima superba seedlings to sulfuric and nitric acid depositions

Contact Info

Product

Resources

About