scholarly journals Simulations of an impulsive model for the growth of fruit trees

2022 ◽  
Vol 2153 (1) ◽  
pp. 012018
Author(s):  
E Duque-Marín ◽  
A Rojas-Palma ◽  
M Carrasco-Benavides
Keyword(s):  
Water Deficit ◽  
Growth And Development ◽  
Growth Dynamics ◽  
Fruit Trees ◽  
Fruit Growth ◽  
Future Scenario ◽  
Continuous Scale ◽  
Negative Effect ◽  
Impulsive Model ◽  
Physical Phenomena

Abstract Mediterranean agricultural systems have been severely affected because of the decrease in rainfall and more frequent and severe droughts due to the global warming phenomenon. The current and future scenario of water deficit could have a negative effect on the growth and development rates of the fruit trees, reflected in the drop of production. To help to face this problem, this work presents a mathematical simulation model of fruit growth with two-time scales: a continuous scale that governs the dynamics of fruit growth and a discrete scale representing the period of time in which the system is intervened with irrigation supply. The results obtained in the simulations allow us to describe and understand the physical phenomena involved in the growth dynamics of fruit trees. In addition, show the importance of the water resource for the growth and development of fruit trees; therefore, a scenario of water deficit would compromise the production and existence of fruit trees.

scholarly journals Effect of Water Deficit on Gas Exchange Responses to Intercellular CO2 Concentration Increase of Quercus suber L. Seedlings

2019 ◽  
Vol 12 (1) ◽  
pp. 73
Author(s):  
Mokhtar Baraket ◽  
Sondes Fkiri ◽  
Ibtissam Taghouti ◽  
Salma Sai Kachout ◽  
Amel Ennajah ◽  
...  
Keyword(s):  
Water Deficit ◽  
Intercellular Co2 Concentration ◽  
Co2 Concentration ◽  
Quercus Suber ◽  
Cork Oak ◽  
Concentration Increase ◽  
Effect Of Water ◽  
Negative Effect ◽  
Photosynthetic Responses ◽  
Intercellular Co2

In north Tunisia, the Quercus suber L. forests have shown a great decline indices as well as a non-natural regeneration. The climate changes could accentuate this unappreciated situation. In this study, the effect of water deficit on physiological behavior of Quercus suber seedlings was investigated. Photosynthetic responses of 15 months old Cork oak seedlings grown for 30 days under 40% and 80% soil water water content (control) were evaluated. Results showed a negative effect of water deficit and a positive effect of the intercellular CO2 concentration increase both on photosynthesis and transpiration. Stomata conductance might play a major role in balancing gas exchanges between the leaf and its environment. Moreover, global warming could negatively affect carbon uptake of Cork oak species in northern Tunisia. Elevated CO2 leaf content will benefit Cork oak growing under water deficit by decreasing both photoysnthesis and transpiration, which will decrease either the rate or the severity of water deficits, with limited effects on metabolism. the results suggest that high intercellular CO2 concentration could increase water use efficiency among Cork oak species.

Differential expression and regulation of expansin gene family members during fruit growth and development of ‘Shijia’ longan fruit

2009 ◽  
Vol 58 (3) ◽  
pp. 225-233 ◽  
Author(s):  
Hui Xie ◽  
Jian-ye Chen ◽  
Rong-cai Yuan ◽  
Yu-xiong Zhong ◽  
Hai-ling Feng ◽  
...  
Keyword(s):  
Gene Family ◽  
Differential Expression ◽  
Growth And Development ◽  
Family Members ◽  
Fruit Growth ◽  
Expansin Gene

scholarly journals Morphological and physiological responses of grapevine (Vitis vinifera L.) to drought stress and dust pollution

2017 ◽  
Vol 29 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Leila Karami ◽  
Nasser Ghaderi ◽  
Taimoor Javadi
Keyword(s):  
Drought Stress ◽  
Water Deficit ◽  
Stability Index ◽  
Dry Weight ◽  
Water Deficit Stress ◽  
Soluble Carbohydrate ◽  
Vitis Vinifera L ◽  
Physiological Changes ◽  
Dust Pollution ◽  
Negative Effect

Abstract Dust pollution can negatively affect plant productivity in hot, dry areas with high insolation during summer. To understand the effect of water-deficit and its interaction with dust pollution on vegetative and physiological changes in grapevine ʻBidaneh Sefidʼ, two-year-old plants were subjected to drought stress (-0.1 and -1 MPa) and dust treatment in a greenhouse during 2013 and 2014. The results showed that dust had a significant negative effect on the number of leaves, shoot length, root and shoot dry weights, and total dry weight under both drought and well-irrigated conditions. Dust, when applied in combination with drought, caused severe growth reduction. Leaf relative water content (RWC) and membrane stability index (MSI) were reduced under dust and drought stress, while soluble carbohydrate, proline, malondialdehyde (MDA) and H2O2 concentrations increased. Furthermore, dust application resulted in characteristics similar to those induced by water-deficit stress and intensified vegetative and physiological changes when applied together. Dust and drought treatments increased peroxidases and ascorbate peroxidase activities when compared to the control. The results indicate that dust has an adverse effect on the growth and physiology of grapevine and plays a negative role in the response of grapevine to drought stress.

Fruit growth and development

2020 ◽  
pp. 245-269
Author(s):  
Francisco R. Tadeo ◽  
Javier Terol ◽  
María J. Rodrigo ◽  
Concetta Licciardello ◽  
Avi Sadka
Keyword(s):  
Growth And Development ◽  
Fruit Growth

scholarly journals Growth dynamics of the Arabidopsis fruit is mediated by cell expansion

2019 ◽  
Vol 116 (50) ◽  
pp. 25333-25342 ◽  
Author(s):  
Juan-José Ripoll ◽  
Mingyuan Zhu ◽  
Stephanie Brocke ◽  
Cindy T. Hon ◽  
Martin F. Yanofsky ◽  
...  
Keyword(s):  
Computational Modeling ◽  
Cell Expansion ◽  
Growth Dynamics ◽  
Spatial Separation ◽  
Cellular Level ◽  
Fruit Growth ◽  
Signaling Cascades ◽  
Comprehensive Understanding ◽  
Cellular Mechanisms ◽  
Plant Reproductive Success

Fruit have evolved a sophisticated tissue and cellular architecture to secure plant reproductive success. Postfertilization growth is perhaps the most dramatic event during fruit morphogenesis. Several studies have proposed that fertilized ovules and developing seeds initiate signaling cascades to coordinate and promote the growth of the accompanying fruit tissues. This dynamic process allows the fruit to conspicuously increase its size and acquire its final shape and means for seed dispersal. All these features are key for plant survival and crop yield. Despite its importance, we lack a high-resolution spatiotemporal map of how postfertilization fruit growth proceeds at the cellular level. In this study, we have combined live imaging, mutant backgrounds in which fertilization can be controlled, and computational modeling to monitor and predict postfertilization fruit growth in Arabidopsis. We have uncovered that, unlike leaves, sepals, or roots, fruit do not exhibit a spatial separation of cell division and expansion domains; instead, there is a separation into temporal stages with fertilization as the trigger for transitioning to cell expansion, which drives postfertilization fruit growth. We quantified the coordination between fertilization and fruit growth by imaging no transmitting tract (ntt) mutants, in which fertilization fails in the bottom half of the fruit. By combining our experimental data with computational modeling, we delineated the mobility properties of the seed-derived signaling cascades promoting growth in the fruit. Our study provides the basis for generating a comprehensive understanding of the molecular and cellular mechanisms governing fruit growth and shape.

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