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Plants
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Improving Yields by Regulating Crop Respiration and Photosynthesis
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Improving Yields by Regulating Crop Respiration and Photosynthesis

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Crop Physiology and Crop Production".

Deadline for manuscript submissions: 1 October 2025 | Viewed by 1759

Special Issue Editor

Dr. Oorbessy Gaju

E-Mail Website
Guest Editor
Lincoln Institute for Agri-Food and Technology, University of Lincoln, Lincoln LN2 2LG, UK
Interests: nitrogen use efficiency; photosynthesis; high throughput phenotyping; crop yield; sustainable agriculture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Crop scientists are facing a major challenge to grow more with less to feed an increasing human population to ensure food security. Photosynthesis and respiration are two key physiological processes that drive crop growth and productivity, which are very much subjected to the vagaries of weather especially when grown in the field. With increasing unpredictable weather conditions due to climate change, whether it is frequent heatwaves that occur during flowering or reproductive phase of the crops or/and low rainfall when the plants are exposed to drought, all these events have dire consequences resulting in yield reductions. One of the methods used to increase crop productivity involves investigating the factors and traits that regulate photosynthesis and respiration in different crops. This Special Issue presents research covering this topic at the physiological, biochemical and molecular levels, focusing on photosynthesis and respiration in different crops. Novel approaches or methodologies that are currently being researched to understand the regulation of photosynthesis and respiration will also be considered in this Special Issue

Dr. Oorbessy Gaju
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • photosynthesis
  • respiration
  • yield
  • assimilate
  • ATP
  • NADPH
  • assimilate
  • vcmax
  • chlorophyll

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Published Papers (2 papers)

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Research

20 pages, 391 KiB  
Article
Comparison of Physiological Characteristics of Pea (Pisum sativum L.) Varieties Under Different Nutritional Conditions and Their Relationship with Meteorological Parameters
by Daiva Janusauskaite
Plants 2025, 14(13), 2020; https://doi.org/10.3390/plants14132020 - 1 Jul 2025
Viewed by 349
Abstract
There is still a lack of knowledge about the photosynthetic activity of semi-leafless peas and the most important factors determining pea productivity during the growing season. The aim of the study was to evaluate and compare the photosynthetic parameters of three semi-leafless pea [...] Read more.
There is still a lack of knowledge about the photosynthetic activity of semi-leafless peas and the most important factors determining pea productivity during the growing season. The aim of the study was to evaluate and compare the photosynthetic parameters of three semi-leafless pea varieties in different nutritional backgrounds at different growth stages and to evaluate the relationship between photosynthetic indicators and pea (Pisum sativum L.) seed yield. The test involved three semi-leafless pea varieties, one of which was a new variety, and five NPK fertilization treatments were used, as follows: (1) without fertilizers—NPK 0:0:0, (2) without N fertilizers NPK 0:40:80, (3) NPK 30:40:80, (4) NPK 60:40:80, and (5) NPK 60:80:160. Photosynthetic indicators were assessed three times during the growing season. It was found that the physiological characteristics of peas differed significantly between cultivars and between growing seasons. The most intensive photosynthesis occurred in the middle of pea flowering and slowed down at the end of this stage. According to the photosynthetic characteristic’s values (A, gs, Ci), the varieties were arranged in the following descending order: Ieva DS, Simona, Respect. The application of the highest NPK fertilizer rates in most cases resulted in the highest photosynthesis rate, which, compared to the control, increased by 22.8–72.3%. Meteorological conditions in most cases had a significant relationship with physiological indicators. Full article
(This article belongs to the Special Issue Improving Yields by Regulating Crop Respiration and Photosynthesis)
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16 pages, 3232 KiB  
Article
Influence of Water and Fertilizer Reduction on Respiratory Metabolism in Sugar Beet Taproot (Beta vulgaris L.)
by Yuxin Chang, Guolong Li, Caiyuan Jian, Bowen Zhang, Yaqing Sun, Ningning Li and Shaoying Zhang
Plants 2024, 13(16), 2282; https://doi.org/10.3390/plants13162282 - 16 Aug 2024
Cited by 1 | Viewed by 1059
Abstract
Inner Mongolia, a major region in China for growing sugar beet, faces challenges caused by unscientific water and fertilizer management. This mismanagement restricts the improvement of sugar beet yield and quality and exacerbates water waste and environmental pollution. This study aims to evaluate [...] Read more.
Inner Mongolia, a major region in China for growing sugar beet, faces challenges caused by unscientific water and fertilizer management. This mismanagement restricts the improvement of sugar beet yield and quality and exacerbates water waste and environmental pollution. This study aims to evaluate the effects of reduced water and fertilizer on the growth and physiological metabolism of sugar beet taproot. Field experiments were conducted in Ulanqab, Inner Mongolia, in 2022 and 2023, using a split-plot design with three levels each of fertilization and irrigation. The study analyzed the effects of reduced water and fertilizer treatments on fresh taproot weight, respiration rate, energy metabolism, respiratory enzyme activity, and gene expression in sugar beet taproot. It was found that a 10% reduction in fertilizer significantly increased the beet taproot fresh weight. Further research revealed that during the rapid leaf growth phase and the taproot and sugar growth period, a 10% reduction in fertilizer upregulated HK and IDH gene expression and downregulated G6PDH gene expression in the beet taproot. This increased HK and IDH activities, decreased G6PDH activity, enhanced the activity of the EMP-TCA pathway, and inhibited the PPP. Taproot weight was positively correlated with the respiration rate, ATP content, EC, and ATPase, HK, and IDH activities, thereby increasing the taproot growth rate and taproot fresh weight, with an average increase of 4.0% over two years. These findings introduce a novel method for optimizing fertilizer use, particularly beneficial in water-scarce regions. Implementing this strategy could help farmers in western Inner Mongolia and similar areas improve crop yield and sustainability. This study offers new insights into resource-efficient agricultural practices, highlighting the importance of customized fertilization strategies tailored to local environmental conditions. Full article
(This article belongs to the Special Issue Improving Yields by Regulating Crop Respiration and Photosynthesis)
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