Storage roots

Vanderschuren, Hervé; Agustí, Javier

doi:10.1016/j.cub.2022.03.034

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…Most tubers and tuberous roots go through a period of dormancy (Gregory, 1965). In annual plants, nutrients are translocated to surviving structures, and this remobilization occurs concomitantly with senescence (Vanderschuren & Agusti, 2022) in the case of T. pentaphyllum to the tubers.…”

Section: Discussionmentioning

confidence: 99%

Tuber production of Tropaeolum pentaphyllum Lam. from different sizes of seed-tubers in two cultivation cycles

Silva,

Mesacasa,

Balestrin

et al. 2024

OLEL

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The liana Tropaeolum pentaphyllum Lam. is an unconventional food plant with potential economic exploitation. This study aimed to evaluate the vegetative propagation of T. pentaphyllum using seed-tubers. A total of 140 tubers were classified into four mass classes: I) < 10 g, II) 10 to 30 g, III) 30 to 70 g, and IV) > 70 g. Each mass class contained 35 tubers. The experiment was carried out in a greenhouse at Federal Institute of Rio Grande do Sul, Sertão, southern Brazil, with temperature and relative humidity of 25°C and 50%, respectively. When the senescence of the aerial stem system occurred, the mass of the tubers was measured using a precision scale (0.01 grams). Analysis of variance and Tukey’s test (p < 0.05) were used to analyze the data obtained in the experiment. In addition, descriptive statistics (mean ± standard deviation) were also used. The ratio between the initial and final masses per tuber class was calculated and the production averages between tuber classes were compared. The annual and biennial productions show that the classes of tuber seeds with mass above 10 g (II, III, and IV) produce more tubers. Class II and III are indicated for annual cultivation considering both the production in number and mass. Regarding the production of tubers for sale, class I with biennial planting is indicated since it presents a more significant mass increment.

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Section: Discussionmentioning

confidence: 99%

Tuber production of Tropaeolum pentaphyllum Lam. from different sizes of seed-tubers in two cultivation cycles

Silva,

Mesacasa,

Balestrin

et al. 2024

OLEL

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“…Indeed, the rapidity and extent of PPD onset could be linked to the level of oxygen entry into the storage roots as it is required to trigger the oxidative burst (reviewed in [33] and [49]. Because of the limitation of model species for the study of storage root physiology [40], the identification of cassava cultivars contrasting for PPD tolerance is of primary interest to decipher the molecular and physiological mechanisms involved in the PPD onset. Previous transcriptomics and proteomics studies [26,31,41,48] using a time course approach on cassava root slices developing PPD symptoms have allowed a preliminary characterization of several pathways deregulated during PPD onset.…”

Section: Discussionmentioning

confidence: 99%

A method for rapid and homogenous initiation of post-harvest physiological deterioration in cassava storage roots identifies Indonesian cultivars with improved shelf-life performance

et al. 2023

Self Cite

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Cassava is the most cultivated and consumed root crop in the world. One of the major constraints to the cassava value chain is the short shelf life of cassava storage roots which is primarily due to the so-called post-harvest physiological deterioration (PPD). The identification of natural sources of PPD tolerance represents a key approach to mitigating PPD losses by generating farmer- and industry-preferred cassava cultivars with prolonged shelf life. In the present study, a PPD assessment method was developed to screen for PPD tolerance in the cassava germplasm. The proposed PPD assessment method displayed a reduced rate of microbial infection and allowed a rapid and homogenous development of typical PPD symptoms in the cassava storage roots. We successfully used the PPD assessment method in combination with an image-based PPD scoring method to identify and characterize PPD tolerance in 28 cassava cultivars from the Indonesian cassava germplasm. Our analysis showed a significant and positive correlation between PPD score and dry matter content (r = 0.589–0.664, p-value < 0.001). Analysis of additional root parameters showed a significant and positive correlation between PPD scores at 2 days post-harvest (dph) and root length (r = 0.388, p-value < 0.05). Our analysis identified at least 4 cultivars displaying a significantly delayed onset of PPD symptoms as compared to the other selected cultivars. The availability of cassava cultivars contrasting for tolerance to PPD will be particularly instrumental to understanding the molecular mechanisms associated with delayed PPD in cassava roots.

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“…In correspondence with leaf functional traits, root functional traits such as the root nutrient reserve may indicate the resource use of belowground nutrients (Weemstra et al., 2016). However, plant root systems are diverse; for example, storage roots function as repositories for nutrient reserves (Vanderschuren & Agusti, 2020). The nutrient concentration of storage roots is associated with asexual reproductive capacity and stress tolerance (Yin et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Exotic plantations differ in “nursing” an understory invader: A probe into invasional meltdown

Wang,

Li,

Yang

et al. 2024

Ecology and Evolution

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Forest plantations most likely promote exotic plant invasion. Using an in situ monitoring method, this study investigated the traits correlated with growth and reproduction of an understory invader, Phytolacca americana L., and ecological factors including understory irradiance, soil stoichiometry and microbial patterns associated with these traits in different exotic plantations of Robinia pseudoacacia L. and Pinus thunbergii Parl. at Mount Lao, Qingdao, China. We found that the traits of P. americana underneath the R. pseudoacacia stand might be situated at the fast side of the trait economic spectrum. The R. pseudoacacia stand appeared to “nurse” P. americana. Furthermore, we intended to explain the nurse effects of R. pseudoacacia stands by examining their ecological factors. First, the R. pseudoacacia stand created understory light attenuation, which matched the sciophilous feature of P. americana. Second, the soil beneath the R. pseudoacacia stand might benefit P. americana more since the soil has greater resource availability. Third, a higher microbial diversity was found in the soil derived from P. americana underneath the R. pseudoacacia stand. A greater abundance of plant pathogens was detected in the soil derived from P. americana in the R. pseudoacacia stand, while more abundant mycorrhizal fungi were detected in the P. thunbergii stand. We speculate that plant pathogens can defend P. americana from aggression from other understory competitors. The mycorrhizal fungi in the P. thunbergii stand might benefit P. americana while simultaneously benefiting other understory plants. Intensive competition from other plants might interfere with P. americana. The potential relationships between plant performance and ecological factors may explain the invasion mechanism of P. americana. The present study provides a novel insight on the facilitative effects of exotic tree plantation on an exotic herb through the modification of soil biota, with implications for the biocontrol of invasive species and forest management and conservation.

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Storage roots

Cited by 6 publications

References 11 publications

Tuber production of Tropaeolum pentaphyllum Lam. from different sizes of seed-tubers in two cultivation cycles

Tuber production of Tropaeolum pentaphyllum Lam. from different sizes of seed-tubers in two cultivation cycles

A method for rapid and homogenous initiation of post-harvest physiological deterioration in cassava storage roots identifies Indonesian cultivars with improved shelf-life performance

Exotic plantations differ in “nursing” an understory invader: A probe into invasional meltdown

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