Article
Agronomy
Andrzej Wysokinski, Izabela Lozak
Summary: The study found that the growth stage and variety of pea plants influence nitrogen uptake from various sources. The rate of nitrogen uptake varies at different stages, and the sources of nitrogen also change throughout the growth cycle.
Article
Agronomy
Ron J. Yates, Emma J. Steel, Chris M. Poole, Robert J. Harrison, Tom J. Edwards, Belinda F. Hackney, Georgina R. Stagg, John G. Howieson
Summary: The study highlights the benefits of introducing legumes and rhizobia to improve soil fertility, reduce nitrogen fertilizer costs, and increase farm profitability. New rhizobia strains demonstrated significant enhancements in nodulation, nitrogen fixation, biomass production, and seed yield, making them promising candidates for commercial inoculants.
GRASS AND FORAGE SCIENCE
(2021)
Article
Microbiology
Candice Mazoyon, Bertrand Hirel, Audrey Pecourt, Manuella Catterou, Laurent Gutierrez, Vivien Sarazin, Frederic Dubois, Jerome Duclercq
Summary: The use of bacterial bio-inputs is an attractive alternative to mineral fertilisers. In ploughed soils, S. sediminicola bacteria were found to enrich the bacterial communities in rotation pea crops. Experimental studies and sequencing of the S. sediminicola genome revealed that it can colonise pea plants and establish a symbiotic association that promotes plant biomass production. This symbiotic association could be a promising alternative for sustainable agricultural practices, particularly under reduced nitrogen fertilisation conditions.
Review
Agronomy
Andrey Sinjushin, Elena Semenova, Margarita Vishnyakova
Summary: This paper describes the use of mutants in pea breeding in Russia, providing examples of cultivars created based on different mutations and introducing potential promising mutations currently under investigation.
Article
Microbiology
Marta Ballesteros-Gutierrez, Marta Albareda, Coral Barbas, Angeles Lopez-Gonzalvez, Michael F. Dunn, Jose M. Palacios
Summary: Rhizobium leguminosarum bv. viciae (Rlv) UPM791 effectively nodulates pea and lentil, and a host-dependent protein called C189 was identified to have diaminobutyrate-2-oxoglutarate aminotransferase (DABA-AT) activity. The dat gene was found to be strongly induced in pea nodules, but not in lentil. Mutants defective in dat showed impaired symbiotic performance with pea plants, while no significant differences were observed in symbiosis with lentil. Comparative metabolomic analysis revealed differences in pea bacteroids, but not in lentil. The presence of L-homoserine and the absence of 2,4-diaminobutyrate (DABA) in pea nodules indicate that the Dat enzyme is involved in the adaptation mechanism of Rlv UPM791 to a homoserine-rich environment.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Ecology
Rocky Putra, Rebecca K. Vandegeer, Shawan Karan, Jeff R. Powell, Susan E. Hartley, Scott N. Johnson
Summary: Two legume species respond differently to silicon, with significant effects on their growth and nitrogen fixation, influenced by plant genotype and symbiosis.
FUNCTIONAL ECOLOGY
(2021)
Article
Agronomy
Andrzej Wysokinski, Izabela Lozak, Beata Kuziemska
Summary: This study aimed to determine nitrogen uptake by winter triticale from pea postharvest residues, and found that the crop absorbed more nitrogen when the soil had higher carbon and nitrogen content, and a greater amount of nitrogen was introduced with pea residues.
Article
Agronomy
Loveleen Kaur Dhillon, Donna Lindsay, Tony Yang, Hossein Zakeri, Bunyamin Tar'an, J. Diane Knight, Thomas D. Warkentin
Summary: This study aims to determine the potential of 20 pea lines derived from crosses between two nodulation mutants in terms of biological nitrogen fixation (BNF) and agronomic performance. The results showed that some of the pea lines outperformed the check cultivars in terms of yield, protein percentage, and BNF capacity.
FIELD CROPS RESEARCH
(2022)
Editorial Material
Plant Sciences
Philip S. Poole, Raphael Ledermann
Summary: Pinitol is transported passively across the symbiosome membrane in Lotus japonicus by the energy-independent polyol transporter LjPLT11. Its accumulation is crucial for maintaining osmotic balance in nodules. The disruption of symbiosome membranes, reduced nitrogen fixation, and increased production of reactive oxygen species in LjPLT11 RNAi lines indicate the importance of LjPLT11 in nodules.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Randy D. Dinkins, Julie A. Hancock, Derek M. Bickhart, Michael L. Sullivan, Hongyan Zhu
Summary: Red clover is an important forage crop that contributes nitrogen input to pastures through nitrogen fixation. Recent studies have identified genes specific to nodule formation in red clover, which may regulate nitrogen fixation efficiency. Understanding the variation and expression of these genes in red clover will provide insights into the legume-rhizobial symbiosis and aid in breeding of red clover genotypes with improved nitrogen fixation efficiency.
Article
Biology
Tahira Abbas, Rong Fan, Sajjad Hussain, Abdul Sattar, Samina Khalid, Madiha Butt, Umbreen Shahzad, Hafiz Muhammad Atif, Momal Batool, Sami Ullah, Yunzhou Li, Abdulrahman Al-Hashimi, Mohamed S. Elshikh, Rashid Al-Yahyai
Summary: The combination of potassium and jasmonic acid application under cadmium stress improved the growth performance and antioxidative capacity of peas, mitigating the harmful effects of cadmium stress on plants.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Plant Sciences
Galina Smolikova, Ksenia Strygina, Ekaterina Krylova, Aleksander Vikhorev, Tatiana Bilova, Andrej Frolov, Elena Khlestkina, Sergei Medvedev
Summary: The transition from seed to seedling is a crucial step in the plant life cycle. In this study, the authors investigated the changes in water and oxidative status, as well as gene expression, during this transition in Pisum sativum seeds. They found that the accumulation of ROS and the shift in water and oxidative status were correlated with the loss of desiccation tolerance. RNA sequencing analysis revealed differentially expressed genes related to metabolism, photosynthesis, cell wall biosynthesis, redox status, and stress responses. The findings suggest that specific genes, such as LTI65, LTP4, and HVA22E, may play a crucial role in the desiccation tolerance loss during the transition.
Article
Agronomy
Pyotr G. Kusakin, Tatiana A. Serova, Natalia E. Gogoleva, Yuri V. Gogolev, Viktor E. Tsyganov
Summary: In this study, transcriptomic profiling in different histological zones of pea nodules revealed that the nitrogen fixation zone had the highest amount of differentially expressed genes (DEGs). Some novel genes were identified as potential players in nodule formation, and comparisons with genes from other legumes were made to discuss their possible functions in nodule development.
Review
Plant Sciences
Malinda S. Thilakarathna, Kevin R. Cope
Summary: Split-root assays are widely used in studies focusing on the regulatory mechanisms in legume-rhizobia symbioses, allowing separate treatment of divided root sections to monitor local and systemic plant responses. Various techniques can be used to establish split-root assemblies, mainly used in legume studies to understand mechanisms related to root nitrogen rhizodeposition, belowground nitrogen transfer, and nodulation regulation.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Dong Wang, Tao Yang, Rong Liu, Nana Li, Naveed Ahmad, Guan Li, Yishan Ji, Chenyu Wang, Mengwei Li, Xin Yan, Hanfeng Ding, Xuxiao Zong
Summary: This study provides a comprehensive resource of heat-tolerant and heat-sensitive pea accessions through heat-tolerance screenings in multi-conditions, and analyzes the population genetic structure of these accessions. The results show that heat stress significantly affects the yield of pea.
Article
Agronomy
Robert J. Harrison, John G. Howieson, Ron J. Yates, Bradley J. Nutt
Summary: The storage time of seeds significantly affects the pattern of hard seed breakdown in annual legumes, with stored seeds showing a substantial reduction in hard seed content after exposure, while fresh seeds remain mostly unaffected.
GRASS AND FORAGE SCIENCE
(2021)
Article
Agronomy
Ron J. Yates, Emma J. Steel, Chris M. Poole, Robert J. Harrison, Tom J. Edwards, Belinda F. Hackney, Georgina R. Stagg, John G. Howieson
Summary: The study highlights the benefits of introducing legumes and rhizobia to improve soil fertility, reduce nitrogen fertilizer costs, and increase farm profitability. New rhizobia strains demonstrated significant enhancements in nodulation, nitrogen fixation, biomass production, and seed yield, making them promising candidates for commercial inoculants.
GRASS AND FORAGE SCIENCE
(2021)
Article
Agronomy
Bradley J. Nutt, Robert J. Harrison, Jen A. McComb, John G. Howieson
Summary: Ornithopus sativus Brot. possesses genetic traits suitable for breeding as a forage legume, with white flower color being inherited recessively to pink and early flowering showing genetic dominance. Cross-pollination opportunities exist within the species, but caution is needed to prevent shifts in population structure from selection pressure.
GRASS AND FORAGE SCIENCE
(2021)
Article
Agronomy
John G. Howieson, Robert J. Harrison, Ron J. Yates, Belinda Hackney, Angelo Loi, Brad J. Nutt
Summary: The patterns and extent of hard seed breakdown of dormant seeds and pods of annual forage legumes buried in the soil in February varied across different accessions. However, some cultivars showed reproducible patterns across all sites, while others showed desirable patterns only in certain regions of Australia. The experiments demonstrated a pragmatic approach for selecting forage legume accessions suited for evaluation in a summer sowing program.
GRASS AND FORAGE SCIENCE
(2021)
Article
Agronomy
Robert J. Harrison, Tom J. Edwards, Emma Steel, Ron J. Yates, Brad J. Nutt, John G. Howieson
Summary: This study examined the conditions required for hard seed breakdown in the South African perennial legume L. ambigua, revealing genetic variation and significant interactions between burial depth, site, and maternal influences. The patterns of hard seed breakdown in L. ambigua differ from those in annual legumes, providing insights for sustainable agricultural development.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Agronomy
J. G. Howieson, T. Edwards, R. J. Harrison, S. M. Lubcke, M. Laurence, A. N. Thompson
Summary: Lebeckia ambigua is a perennial legume plant native to South Africa, adapted to dry and infertile soils. Experiments in Western Australia showed that sheep grazing on L. ambigua in autumn did not have adverse effects on either the animal or the plant. This suggests that L. ambigua could be a valuable plant for increasing livestock production sustainably on infertile soils.
AGRONOMY FOR SUSTAINABLE DEVELOPMENT
(2021)
Article
Agriculture, Multidisciplinary
Angelo Loi, Dean T. Thomas, Ronald J. Yates, Robert J. Harrison, Mario D'Antuono, Giovanni A. Re, Hayley C. Norman, John G. Howieson
Summary: Nitrogen fixation from pasture legumes plays a crucial role in the profitability and sustainability of dryland agricultural systems. This research indicates that well-managed pastures based on aerial-seeding pasture legumes can partially or even wholly meet the nitrogen requirements of subsequent grain crops, reducing the need for inorganic nitrogen fertilizers.
JOURNAL OF AGRICULTURAL SCIENCE
(2022)
Article
Agriculture, Dairy & Animal Science
Matt G. Wilmot, Hayley C. Norman, Joshua Hendry, Paul Young, Elizabeth Hulm, Andrew Toovey, Jane Speijers, Robert Harrison
Summary: This study compared the feeding value and animal health effects of a new pasture legume, Trigonella balansae, with two widely adopted legumes. The results showed no significant differences in weight, wool growth, or condition score of sheep grazing different pastures. However, the digestibility, minerals, and crude protein content of the pastures varied over time. Sheep grazing Trigonella balansae had some health issues due to the insufficient intake of certain minerals. Nevertheless, there were no significant differences in meat quality among the three legumes based on sensory analysis.
ANIMAL PRODUCTION SCIENCE
(2023)
Article
Plant Sciences
G. K. Jaganathan, R. J. Harrison
Summary: Seeds with physical dormancy (PY) dominate dry tropical forests. This study reveals that the moisture content and temperature play crucial roles in the preconditioning and 'water-gap' opening stages of PY. High temperature breaks PY in seconds, while seasonal temperature fluctuations and constant temperatures require a longer time. The moisture content of seeds and its interaction with biochemical compounds may explain why only a portion of PY seeds become permeable each year.