Leaf phenotypic variation and developmental instability in relation to different light regimes

Venâncio, Henrique; Alves-Silva, Estevão; Santos, Jean Carlos

doi:10.1590/0102-33062016abb0081

Cited by 12 publications

(12 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reason for this dependence is supposedly the competition for sunlight, which results in a decrease in developmental stability and an increase in FA in a population with a small surface of leaf blades and, accordingly, with a small amount of homologous bilateral symmetrical traits (Venâncio et al, 2016). Based on this, an important part of the preliminary analysis was the homogenization of the primary data.…”

Section: Resultsmentioning

confidence: 99%

Conjugacy of two types of phenotypic variability of small-leaved linden

Baranov

Zykov²,

Kuznetsova³

2019

Vestn. VOGiS

View full text Add to dashboard Cite

The properties of five bilaterally symmetrical features of the leaf blades of the small-leaved linden (Tilia cordata Mill.) in four populations of the Moscow Region in 2014–2017 were studied. The angle trait was excluded, because it possessed the property of directional asymmetry. Instead, a new linear trait was used: the distance between the base of the second vein of the first order and the base of the first vein of the second order on the first vein of the first order. The population difference in fluctuating asymmetry (FA) was found only in the first two traits (leaf width and distance between the bases of the first vein of the first order and the second vein of the second order). The largest value of FA was in the urban environment, the smallest was in the rural areas. A weak negative correlation was obtained between the magnitude of linear characteristics and the value of FA, as well as a weak positive correlation relationship between the values of FA in five traits. The first trait had the highest fluctuation variability, and the second one had the highest plastic variability. The regression dependence of the fluctuation variability on the plastic variability (b1 = 0.25, p <0.05) and the dependence of these two types of variability on the interaction of the factors “year” and “site of sampling” were revealed. Thus, the conclusion was made about the conjugacy of two types of variability: fluctuation and plastic. According to the authors, asynchronous growth, competition for light in conditions of high solar activity in 2014–2016 compared to the abnormal wet summer of 2017 led to an increase in FA due to destabilization of mechanisms of growth and regulation of gene expression, which contributed to a decrease in the stability of development. The increase in FA and the decrease in the developmental stability in urban ambient in 2016 could be due to: a)an intensive flow of vehicles in spring and summer, b) a high level of groundwater in this part of the city and c) increased hydrolytic acidity of the soil.

show abstract

Section: Resultsmentioning

confidence: 99%

Conjugacy of two types of phenotypic variability of small-leaved linden

Baranov

Zykov²,

Kuznetsova³

2019

Vestn. VOGiS

View full text Add to dashboard Cite

show abstract

“…The Bauhinia brevipes revealed a normal pattern of distribution in plants in sunlight and antisymmetry in shaded plants. At the same time, the asymmetry and leaf area were 5 % and 26.8 % higher respectively in plants in the shade, which is a compensation for low absorption of light and indicates stress [8].…”

Section: Introductionmentioning

confidence: 83%

Manifestation of effect of fluctuating asymmetry of bilateral traits of tomato growing in industrial greenhouses

Ракутько

Alsiņa

Avotiņš

et al. 2018

Engineering for Rural Development

View full text Add to dashboard Cite

Abstract. Sustainable plant development, i.e. maintenance of its phenotype in conditions of changing environmental parameters or genetic deviations, is realized by a set of mechanisms, generally characterized by developmental stability. The most striking manifestation of the stability of the development of the biological object at the macro level is the effect of fluctuating asymmetry (FA). The lighting conditions, along with other environmental factors, affect both the productivity of the plant and the stability of its development. The issues that remain scarcely studied are the influence of lighting conditions and plant variety on the FA level. One of the widely used and informative parameters is the chlorophyll content in plant leaves and their size. The aim of the study is to confirm the hypothesis of the effect of differences in the light quality and plant variety on the level of FA of the symmetrical plant structures. The object of the study is the leaves of tomato plants grown in an industrial greenhouse. The measurements were carried out in the greenhouse of Mezvidi, Latgalia, for three variants: tomato variety orange Bolzano F1 grown under high-pressure sodium lamps (HPS) and LED sources, and the red Encore F1 grown under HPS. As a result of the experiments, the presence of a significant asymmetry of the bilateral structures of tomato leaves was detected by their size and chlorophyll content. The fluctuating nature of asymmetry is proved. It was revealed that the influence of the type of the light source and tomato variety on FA on the basis of certain traits is multidirectional. For the tomato variety Bolzano, the level of FA on the basis of the leaflet size is 66 % higher under HPS compared to the LED, and on the basis of the chlorophyll content does not depend on the type of the light source. For HPS the level of FA on the basis of the leaflet size is 24 % higher at Bolzano compared to Encore, and on the basis of the chlorophyll content, it is 28 % lower.Keywords: developmental, stability, plant, lighting, energoecology. IntroductionEffective cultivation of plants in artificial conditions is possible only using the indoor plant lighting technology with supplemental light sources. Light is one of the factors that affect the concentration of phytochemical compounds [1]. Sustainable plant development, i.e. maintenance of its phenotype in conditions of changing environmental parameters or genetic deviations is realized by a set of mechanisms, generally characterized by stability of development. The most striking manifestation of the stability of the development of the biological object at the macrolevel is the fluctuating asymmetry (FA), which consists in minor and random deviations of the parameters of bilateral (mirror) traits. It was revealed that the relationship between stress factors and the stability of development is not obvious. A number of researchers note an increase of the FA level under stress, while others do not confirm a statistically significant relationship [2]. Under favourable environ...

show abstract

“…FA is commonly used as a biomarker of population stress, as it more often than not positively relates to elevated levels of stress, such as pollution, soil conditions, herbivory and parasitism, among others (Kozlov et al 1996;Møller & Shykoff 1999;Cuevas-Reyes et al 2011). Microhabitat conditions are also among the detrimental factors that influence population distribution and individual performance (Raz et al 2011), and sun/shade conditions already have been shown to influence to a large extent FA levels (Puerta-Piñero et al 2008;Alves-Silva & Del-Claro 2013;Venâncio et al 2016a), indicating that plants do respond to sunlight conditions by showing stress, which can be statistically evaluated with FA. In some cases, FA is negatively related to fitness, so this biomarker can be Acta Botanica Brasilica -31(2): 286-294.…”

Section: Discussionmentioning

confidence: 99%

“…Nonetheless, this is followed by a reduction of leaf toughness (Björkman 1981;Sims & Pearcy 1989), which is a measure of mechanic resistance and an important factor of plant defence against herbivory (Lucas et al 2000;Korndörfer & Del-Claro 2006;Read & Stokes 2006;Peeters et al 2007). For early successional plant species, shade also may be classified as a stressing environmental condition, because these plants are naturally adapted to and depend on sunlight exposure for their development (Venâncio et al 2016a).…”

Section: Introductionmentioning

confidence: 99%

Patterns of growth, development and herbivory of Palicourea rigida are affected more by sun/shade conditions than by Cerrado phytophysiognomy

2017

View full text Add to dashboard Cite

Plant development is infl uenced by several abiotic factors, which in turn infl uence morphological traits and life history. We investigated whether leaf area, herbivory, toughness, fl uctuating asymmetry, structural complexity and the number of infl orescences of Palicourea rigida are infl uenced by sun/shade conditions or by Cerrado phytophysiognomy (typical cerrado or rupestrian fi eld). We expected to fi nd greater structural complexity, leaf toughness and more infl orescences in sun plants; shaded plants were expected to exhibit a greater degree of fl uctuating asymmetry (an index of plant stress), reduced leaf toughness and greater herbivory. As for phytophysiognomies, we expected to fi nd higher levels of leaf toughness and reduced structural complexity in plants from the rupestrian fi eld. We sampled plants in the sun and shade from both phytophysiognomies. Leaf area, toughness, herbivory and fl uctuating asymmetry, were infl uenced more by sun/shade conditions than phytophysiognomy; leaf toughness was the only variable to show greater values in conditions of sun. Our results indicate that exposure to sunlight is not a requirement for increased plant development, but plants in shade are experiencing stress, as shown by increased fl uctuating asymmetry; increased leaf area, a strategy to compensate for lower light exposure for plants and higher herbivory, which depicts lower toughness.

show abstract

Leaf phenotypic variation and developmental instability in relation to different light regimes

Cited by 12 publications

References 55 publications

Conjugacy of two types of phenotypic variability of small-leaved linden

Conjugacy of two types of phenotypic variability of small-leaved linden

Manifestation of effect of fluctuating asymmetry of bilateral traits of tomato growing in industrial greenhouses

Patterns of growth, development and herbivory of Palicourea rigida are affected more by sun/shade conditions than by Cerrado phytophysiognomy

Contact Info

Product

Resources

About