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Influence of arbuscular mycorrhizae on the root system of maize plants under salt stress.
Can J Microbiol. 2009 Jul; 55(7):879-86.CJ

Abstract

Salt stress has become a severe global problem, and salinity is one of the most important abiotic factors limiting plant growth and yield. It is known that arbuscular mycorrhizal (AM) fungi decrease plant yield losses under salinity. With the aim of determining whether AM inoculation would give an advantage to root development under salt stress, a greenhouse experiment was carried out with AM or without AM fungi. Maize plants were grown in a sand and soil mixture with 5 NaCl levels (0, 0.5, 1.0, 1.5, and 2.0 g/kg dry substrate) for 55 days, following 15 days of nonsaline pretreatment. At all salt levels, mycorrhizal plants had higher dry shoot and root mass, higher root activity, and lower root to shoot ratios than non-mycorrhizal plants. In salt-free soil, root length, root surface area, root volume, and number of root tips and forks were significantly larger in mycorrhizal plants than in non-mycorrhizal plants, whereas, under salt stress, average root diameter and root volume of mycorrhizal plants were larger than those of non-mycorrhizal plants. Regardless of the NaCl level, mycorrhizal plants had lower specific root length, lower percentage of root length in the 0-0.2 mm diameter class, and higher percentage of root length in both the 0.2-0.4 mm and 0.4-0.6 mm diameter classes, which suggests that the root system shows a significant shift towards a thicker root system when maize plants were inoculated with Glomus mosseae (Nicolson & Gerdemann). The results presented here indicate that the improvements in root activity and the coarse root system of mycorrhizal maize may help in alleviating salt stress on the plant.

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Authors+Show Affiliations

Sheng M
College of Life Science, Northwest A&F University, Yangling, Shaanxi 712100, China.
Tang M
No affiliation info available
Chen H
No affiliation info available
Yang B
No affiliation info available
Zhang F
No affiliation info available
Huang Y
No affiliation info available

MeSH

BiomassGlomeromycotaMycorrhizaePlant RootsSodium ChlorideZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19767861

Citation

Sheng, Min, et al. "Influence of Arbuscular Mycorrhizae On the Root System of Maize Plants Under Salt Stress." Canadian Journal of Microbiology, vol. 55, no. 7, 2009, pp. 879-86.
Sheng M, Tang M, Chen H, et al. Influence of arbuscular mycorrhizae on the root system of maize plants under salt stress. Can J Microbiol. 2009;55(7):879-86.
Sheng, M., Tang, M., Chen, H., Yang, B., Zhang, F., & Huang, Y. (2009). Influence of arbuscular mycorrhizae on the root system of maize plants under salt stress. Canadian Journal of Microbiology, 55(7), 879-86. https://doi.org/10.1139/w09-031
Sheng M, et al. Influence of Arbuscular Mycorrhizae On the Root System of Maize Plants Under Salt Stress. Can J Microbiol. 2009;55(7):879-86. PubMed PMID: 19767861.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of arbuscular mycorrhizae on the root system of maize plants under salt stress. AU - Sheng,Min, AU - Tang,Ming, AU - Chen,Hui, AU - Yang,Baowei, AU - Zhang,Fengfeng, AU - Huang,Yanhui, PY - 2009/9/22/entrez PY - 2009/9/22/pubmed PY - 2009/11/10/medline SP - 879 EP - 86 JF - Canadian journal of microbiology JO - Can J Microbiol VL - 55 IS - 7 N2 - Salt stress has become a severe global problem, and salinity is one of the most important abiotic factors limiting plant growth and yield. It is known that arbuscular mycorrhizal (AM) fungi decrease plant yield losses under salinity. With the aim of determining whether AM inoculation would give an advantage to root development under salt stress, a greenhouse experiment was carried out with AM or without AM fungi. Maize plants were grown in a sand and soil mixture with 5 NaCl levels (0, 0.5, 1.0, 1.5, and 2.0 g/kg dry substrate) for 55 days, following 15 days of nonsaline pretreatment. At all salt levels, mycorrhizal plants had higher dry shoot and root mass, higher root activity, and lower root to shoot ratios than non-mycorrhizal plants. In salt-free soil, root length, root surface area, root volume, and number of root tips and forks were significantly larger in mycorrhizal plants than in non-mycorrhizal plants, whereas, under salt stress, average root diameter and root volume of mycorrhizal plants were larger than those of non-mycorrhizal plants. Regardless of the NaCl level, mycorrhizal plants had lower specific root length, lower percentage of root length in the 0-0.2 mm diameter class, and higher percentage of root length in both the 0.2-0.4 mm and 0.4-0.6 mm diameter classes, which suggests that the root system shows a significant shift towards a thicker root system when maize plants were inoculated with Glomus mosseae (Nicolson & Gerdemann). The results presented here indicate that the improvements in root activity and the coarse root system of mycorrhizal maize may help in alleviating salt stress on the plant. SN - 1480-3275 UR - https://www.unboundmedicine.com/medline/citation/19767861/Influence_of_arbuscular_mycorrhizae_on_the_root_system_of_maize_plants_under_salt_stress_ L2 - https://cdnsciencepub.com/doi/10.1139/w09-031?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -