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Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations

Golden genotype of papaya (Carica papaya), named for its yellowish leaves, produces fruits very much appreciated by consumers worldwide. However, its growth and yield are considerably lower than those of other genotypes, such as ‘Sunrise Solo’, which has intensely green leaves. We undertook an inves...

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Autores principales: Paixão, Jéssica Sousa, Da Silva, Jefferson Rangel, Ruas, Katherine Fraga, Rodrigues, Weverton Pereira, Filho, José Altino Machado, Bernado, Wallace de Paula, Abreu, Deivisson Pelegrino, Ferreira, Luciene Souza, Gonzalez, Julian Cuevas, Griffin, Kevin Lee, Ramalho, José Cochicho, Campostrini, Eliemar
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441136/
https://www.ncbi.nlm.nih.gov/pubmed/30949326
http://dx.doi.org/10.1093/aobpla/plz013
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author Paixão, Jéssica Sousa
Da Silva, Jefferson Rangel
Ruas, Katherine Fraga
Rodrigues, Weverton Pereira
Filho, José Altino Machado
Bernado, Wallace de Paula
Abreu, Deivisson Pelegrino
Ferreira, Luciene Souza
Gonzalez, Julian Cuevas
Griffin, Kevin Lee
Ramalho, José Cochicho
Campostrini, Eliemar
author_facet Paixão, Jéssica Sousa
Da Silva, Jefferson Rangel
Ruas, Katherine Fraga
Rodrigues, Weverton Pereira
Filho, José Altino Machado
Bernado, Wallace de Paula
Abreu, Deivisson Pelegrino
Ferreira, Luciene Souza
Gonzalez, Julian Cuevas
Griffin, Kevin Lee
Ramalho, José Cochicho
Campostrini, Eliemar
author_sort Paixão, Jéssica Sousa
collection PubMed
description Golden genotype of papaya (Carica papaya), named for its yellowish leaves, produces fruits very much appreciated by consumers worldwide. However, its growth and yield are considerably lower than those of other genotypes, such as ‘Sunrise Solo’, which has intensely green leaves. We undertook an investigation with the goal of evaluating key physiological traits that can affect biomass accumulation of both Golden and Sunrise Solo genotypes. Papaya seeds from two different genotypes with contrasting leaf colour ‘Sunrise Solo’ and Golden were grown in greenhouse conditions. Plant growth (plant height, leaf number, stem diameter, leaf area, plant dry weight), leaf gas exchanges, leaf carbon balance, RuBisCO oxygenation and carboxylation rates, nitrogen, as well as chlorophyll concentrations and fluorescence variables were assessed. Although no significant differences were observed for photosynthetic rates between genotypes, the accumulation of small differences in photosynthesis, day after day, over a long period, might contribute to some extend to a higher C-budget in Sunrise Solo, higher leaf area and, thus, to higher productivity. Additionally, we consider that physiological processes other than photosynthesis and leaf respiration can be as well involved in lower growth and yield of Golden. One of these aspects could be related to the higher rates of photorespiration observed in Sunrise Solo, which could improve the rate of N assimilation into organic compounds, such as amino acids, thus contributing to the higher biomass production in Sunrise Solo relative to Golden. Further experiments to evaluate the effects of N metabolism on physiology and growth of Golden are required as it has the potential to limit its yield.
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spelling pubmed-64411362019-04-04 Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations Paixão, Jéssica Sousa Da Silva, Jefferson Rangel Ruas, Katherine Fraga Rodrigues, Weverton Pereira Filho, José Altino Machado Bernado, Wallace de Paula Abreu, Deivisson Pelegrino Ferreira, Luciene Souza Gonzalez, Julian Cuevas Griffin, Kevin Lee Ramalho, José Cochicho Campostrini, Eliemar AoB Plants Studies Golden genotype of papaya (Carica papaya), named for its yellowish leaves, produces fruits very much appreciated by consumers worldwide. However, its growth and yield are considerably lower than those of other genotypes, such as ‘Sunrise Solo’, which has intensely green leaves. We undertook an investigation with the goal of evaluating key physiological traits that can affect biomass accumulation of both Golden and Sunrise Solo genotypes. Papaya seeds from two different genotypes with contrasting leaf colour ‘Sunrise Solo’ and Golden were grown in greenhouse conditions. Plant growth (plant height, leaf number, stem diameter, leaf area, plant dry weight), leaf gas exchanges, leaf carbon balance, RuBisCO oxygenation and carboxylation rates, nitrogen, as well as chlorophyll concentrations and fluorescence variables were assessed. Although no significant differences were observed for photosynthetic rates between genotypes, the accumulation of small differences in photosynthesis, day after day, over a long period, might contribute to some extend to a higher C-budget in Sunrise Solo, higher leaf area and, thus, to higher productivity. Additionally, we consider that physiological processes other than photosynthesis and leaf respiration can be as well involved in lower growth and yield of Golden. One of these aspects could be related to the higher rates of photorespiration observed in Sunrise Solo, which could improve the rate of N assimilation into organic compounds, such as amino acids, thus contributing to the higher biomass production in Sunrise Solo relative to Golden. Further experiments to evaluate the effects of N metabolism on physiology and growth of Golden are required as it has the potential to limit its yield. Oxford University Press 2019-03-08 /pmc/articles/PMC6441136/ /pubmed/30949326 http://dx.doi.org/10.1093/aobpla/plz013 Text en © The Author(s) 2019. Published by Oxford University Press on behalf of the Annals of Botany Company. http://creativecommons.org/licenses/by/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Studies
Paixão, Jéssica Sousa
Da Silva, Jefferson Rangel
Ruas, Katherine Fraga
Rodrigues, Weverton Pereira
Filho, José Altino Machado
Bernado, Wallace de Paula
Abreu, Deivisson Pelegrino
Ferreira, Luciene Souza
Gonzalez, Julian Cuevas
Griffin, Kevin Lee
Ramalho, José Cochicho
Campostrini, Eliemar
Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title_full Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title_fullStr Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title_full_unstemmed Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title_short Photosynthetic capacity, leaf respiration and growth in two papaya (Carica papaya) genotypes with different leaf chlorophyll concentrations
title_sort photosynthetic capacity, leaf respiration and growth in two papaya (carica papaya) genotypes with different leaf chlorophyll concentrations
topic Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441136/
https://www.ncbi.nlm.nih.gov/pubmed/30949326
http://dx.doi.org/10.1093/aobpla/plz013
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