A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

Fishman, Svetlana; Génard, Michel

doi:10.1046/j.1365-3040.1998.00322.x

Cited by 171 publications

(161 citation statements)

References 55 publications

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“…Crop yield has a high dependence on biomass production (Johnson, 1987), since the amount of carbohydrate supplied to fruits during their formation depends directly on the amount of assimilates produced during the photosynthetic process (Fishman and Génard, 1998;Rosati et al, 1999;Le Roux et al, 2001). Thus, because photosynthesis, and ultimately the source-sink regulation of sugar partitioning, is related to (and depends on) a healthy leaf area and the integrity of the plant, it may be assumed that, as a consequence of the alterations in leaf gas exchange caused by disease, considerable reductions in crop yield result from pathogen invasion and establishment in plant tissues.…”

Section: Introductionmentioning

confidence: 99%

Differential leaf gas exchange performance of mango cultivars infected by different isolates of Ceratocystis fimbriata

Bispo

Araújo

Moreira

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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Caused by the vascular fungus Ceratocystis fimbriata, mango wilt is considered to be one of the most serious threats in mango-producing regions worldwide. However, changes in leaf gas exchange level and the mechanisms underlying host responses to this fungal infection remain poorly described. This study aimed to evaluate potential changes in the leaf gas exchange of different mango cultivars (Ubá, Espada, Haden and Tommy Atkins) in response to two Brazilian isolates of C. fimbriata (CEBS15 and MSAK16) to non-invasively assess cultivar variability in relation to the basal level of resistance to mango wilt. Both isolates, regardless of the cultivar, caused reductions in stomatal conductance and, thus, a reduction in CO 2 assimilation via diffusive limitations. Taking into account the full length of the internal lesion and the radial colonization of the stem tissues, both isolates showed equivalent aggressiveness when inoculated into the Haden and Tommy Atkins cultivars. Conversely, when compared to the CEBS15 isolate of C. fimbriata, the MSAK16 isolate was more aggressive in cv. Espada and less aggressive in cv. Ubá.

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Section: Introductionmentioning

confidence: 99%

Differential leaf gas exchange performance of mango cultivars infected by different isolates of Ceratocystis fimbriata

Bispo

Araújo

Moreira

et al. 2016

Sci. agric. (Piracicaba, Braz.)

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show abstract

“…(5), not only it can describe the single cell growth, but also some single cell simulations. A good example presents a Fishman and Genard model (Fishman and Genard 1998), where the growing fruit is assimilated to one big cell separated from the exterior by a composite membrane (see also Liu et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Self-consistent equation of plant cell growth

Pietruszka¹

2009

gpb

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Abstract. We introduce a transcendental equation, describing the subsequent stages of plant cell/organ growth. Starting from empirically verified conclusions originating from the central limit theorem we also insert the influence of temperature on elongation growth to receive a time-dependent equation of growth parameterized by temperature. This self-consistent equation evolves with time using three cardinal parameters: t 0 , T 0 and V 0 . They represent the time of maximum expansion rate, the growth optimum temperature and the corresponding volume, respectively. Experimental determination of these cardinal values enables evaluation of the dynamic extensibility coefficient Φ = Φ T (t) in time and temperature domain.

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“…Yet, in 2014 only 43 trees were left. From 2013, trees were not treated with fungicide after bud burst and they were subject to different thinning intensities (TI) in order to alter the fruit/leaf ratio and obtain different fruit growth rates (Fishman and Genard, 1998). We thinned the trees at Julian day (JD) 136 in the year 2014 and at JD 153 in 2015.…”

Section: Experimental Orchard and Sampling Designmentioning

confidence: 99%

The Crop Load Affects Brown Rot Progression in Fruit Orchards: High Fruit Densities Facilitate Fruit Exposure to Spores but Reduce the Infection Rate by Decreasing Fruit Growth and Cuticle Cracking

et al. 2018

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Brown rot, triggered by Monilinia spp., causes significant economic losses in fruit crop and it is mainly controlled by chemicals with inherent environmental costs. Controlling brown rot spreading by diminishing fruit susceptibility to the disease, via sustainable cultural practices, is a promising approach. In a 2 years experiment (2014-2015) on a peach (Prunus persica) orchard, we controlled fruit growth rates by varying the fruit load. Fruit thinning practices enhanced the fruit growth and laboratory analyses showed that, in both 2014 and 2015 samples, fast growing fruits were more susceptible to infection when in contact with conidia suspension of Monilinia laxa. In the field, brown rot infection took place in 2014 and not in 2015. In 2014, trees subject to moderate thinning intensities had the highest brown rot incidence. We argue that this is due to the fact that, for null thinning, slow growing fruits are less susceptible to the infection while, for intense thinning, even if faster growing fruits are more susceptible to infection, the lower fruits density reduces per-contact probability of infection. We compared meteorological data of 2014 and 2015 and we argue that brown rot did not spread in 2015 due to an absence of favorable conditions, summarized as the number of rainy days with mean temperature between 22 and 26 • C, in the period of fruit susceptibility.

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A biophysical model of fruit growth: simulation of seasonal and diurnal dynamics of mass

Cited by 171 publications

References 55 publications

Differential leaf gas exchange performance of mango cultivars infected by different isolates of Ceratocystis fimbriata

Differential leaf gas exchange performance of mango cultivars infected by different isolates of Ceratocystis fimbriata

Self-consistent equation of plant cell growth

The Crop Load Affects Brown Rot Progression in Fruit Orchards: High Fruit Densities Facilitate Fruit Exposure to Spores but Reduce the Infection Rate by Decreasing Fruit Growth and Cuticle Cracking

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