Physiological Networks Determining Plant Production Under Stress: Results of Genotype–Environment Interactions

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Plant-Crop Biology and Biochemistry".

Deadline for manuscript submissions: 31 May 2025 | Viewed by 789

Special Issue Editors


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Departamento de Biologia, Instituto de Ciências Naturais, Universidade Federal de Lavras, Lavras 3037, Brazil
Interests: plant production; flooding and water deficit; water use efficiency
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Guest Editor
Departamento de Biologia, Instituto de Ciências Naturais, Universidade Federal de Lavras, 3037 Lavras, Brazil
Interests: crop physiology; plant physiology; plant metabolism; stress physiology

Special Issue Information

Dear Colleagues,

Production by a plant can be approached as an integrative, emergent phenotypic trait. That is to say, the plant’s production is a phenotypic trait that emerges from a complex network of morphophysiological traits at lower hierarchical levels. From this perspective, any variation in the genotype and/or environment has the potential to cause a variation in the production. With this background in mind, the study of plant production must be based on a systemic view of the multiple traits that vary according to genotype–environment interactions, which can be called the enviromics. A physiological trait-based environmics is urgently needed to help us understand how the genetic determinism of small-scale physiological mechanisms interacts in and with the environment, leading to plant production. This gives rise to some questions: What are the main physiological traits upon which plant production relies? How do adverse environmental conditions impact those traits? How can management be applied to reduce the negative impact of stress on the key physiological traits plant production relies on? This Special Issue is open for contributions aiming to explore such questions and expand our understanding of the physiological networks determining plant production and its reliance on genotype–environment interactions, especially considering the production of plants under stress.

Dr. João Paulo Barbosa
Dr. Paulo Eduardo Marchiori
Guest Editors

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Keywords

  • food gap
  • enviromics
  • phenotyping
  • plant–environment interactions
  • crop physiology
  • climate change
  • adverse environments
  • resilience to stress
  • morphophysiological traits and production
  • phenotypic plasticity

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Published Papers (1 paper)

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Research

17 pages, 1858 KiB  
Article
Sugarcane Responses to Water Deficit Are Modulated by Environmental CO2 Concentration in a Genotype and Scale Dependent-Manner
by Zulma Catherine Cardenal-Rubio, Elberth Hernando Pinzón-Sandoval, Paulo Cássio Alves Linhares, Antonia Almeida da Silva, Claudia Rita de Souza, Mewael Kiros Assefa, João Paulo Rodrigues Alves Delfino Barbosa and Paulo Eduardo Ribeiro Marchiori
Agronomy 2025, 15(3), 726; https://doi.org/10.3390/agronomy15030726 - 18 Mar 2025
Viewed by 427
Abstract
Events by changes in climate alter the growth and physiology of sugarcane. In this context, the study aimed to investigate the morphological, anatomical, and physiological responses of two different sugarcane varieties under a condition of high carbon dioxide (CO2) associated with [...] Read more.
Events by changes in climate alter the growth and physiology of sugarcane. In this context, the study aimed to investigate the morphological, anatomical, and physiological responses of two different sugarcane varieties under a condition of high carbon dioxide (CO2) associated with water deficit, testing the hypothesis that sugarcane responses to drought are modulated by high (CO2) in different plant scales. Thirty days after sprouting, the plants were grown under two (CO2) in the atmosphere (400 and 680 μmol CO2 mol−1 of air) and under water restriction conditions. At the morphological level, we assessed total biomass, plant height, stem diameter, leaf area, and root-shoot ratio; at the physiological level, relative water content, water use efficiency, in vivo maximum rate of Rubisco, and PEPC carboxylation, photosynthesis, total organic carbon, and nitrogen, and carbon-nitrogen ratio. At the anatomical level, we assessed stomatal density at adaxial and abaxial surfaces and wall thickness bundle sheath cells. The results indicate that at all levels, the response of sugarcane plants exposed to high CO2 concentration and drought is genotype-dependent. In general, variety RB855536 showed greater physiological responses: a better water use efficiency and alteration in the carboxylation rate of Rubisco enzyme, while variety RB867515 showed a greater morphological response determined by changes in biomass allocation and anatomical alterations of stomatal densities and functionality. The sugarcane varieties exposed to water deficit and high CO2 concentration developed different strategies based on morphological, physiological, and/or anatomical changes that are useful for facing climate change scenarios, and the effects of drought can be mitigated by the high (CO2) in the air. Full article
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