Legume-Rhizobia Symbiosis: Difference between revisions

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==Introduction==
==Introduction==
Select a topic about genetics or evolution in a specific organism or ecosystem.<br>
Legumes, which include many common foods such as soybeans and peas, are well known as the only plant family with the capability to fix nitrogen. Most environmental nitrogen is in the form of N₂, or atmospheric nitrogen. However, for plants to uptake and use this vital nutrient, it must be in an organic form such as ammonia (NH₃), nitrate (NO₃-), or nitrite (NO₂-). Legumes possess the ability to fix atmospheric nitrogen into organic compounds through their symbiotic relationship with Rhizobia bacteria.  
Overall text length (all text sections) should be at least 1,000 words (before counting references), with at least 2 images.<br><br>
During rhizobial symbiosis, rhizobia infects plant roots to form root nodules. The bacteria facilitate nitrogen uptake for the plants (S, J. 2023). The rhizobia provides the legume with a source of fixed nitrogen, while in turn, the host legume provides the rhizobia with key nutrients for metabolism (U, M. 2013).  
The topic must include one section about microbes (bacteria, viruses, fungi, or protists). This is easy because all organisms and ecosystems have microbes.
The availability of organic nitrogen in the soil is a major limiting factor for plant growth (S, J. 2023). Because of this symbiosis with rhizobia is crucial for productivity in legumes (P, N. A. 2003). Research on this symbiotic interaction has the potential to enhance food production and make sustainable changes in the field of agriculture (P, N. A. 2003). This page will discuss the process for nodulation and key genes of this symbiosis.
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[[Image:Istockphoto-1347307099-612x612_(2).jpg|thumb|300px|left|Figure 1. Nodules of soybean roots. Atmospheric nitrogen-fixing bacteria live inside.]]
 
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<br><b>Legend/credit:</b> Electron micrograph of the Ebola Zaire virus. This was the first photo ever taken of the virus, on 10/13/1976. By Dr. F.A. Murphy, now at U.C. Davis, then at the CDC.
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==Initiating Legume-Rhizobia Symbiosis==
==Initiating Legume-Rhizobia Symbiosis==

Revision as of 20:13, 12 December 2024

Introduction

Legumes, which include many common foods such as soybeans and peas, are well known as the only plant family with the capability to fix nitrogen. Most environmental nitrogen is in the form of N₂, or atmospheric nitrogen. However, for plants to uptake and use this vital nutrient, it must be in an organic form such as ammonia (NH₃), nitrate (NO₃-), or nitrite (NO₂-). Legumes possess the ability to fix atmospheric nitrogen into organic compounds through their symbiotic relationship with Rhizobia bacteria. During rhizobial symbiosis, rhizobia infects plant roots to form root nodules. The bacteria facilitate nitrogen uptake for the plants (S, J. 2023). The rhizobia provides the legume with a source of fixed nitrogen, while in turn, the host legume provides the rhizobia with key nutrients for metabolism (U, M. 2013). The availability of organic nitrogen in the soil is a major limiting factor for plant growth (S, J. 2023). Because of this symbiosis with rhizobia is crucial for productivity in legumes (P, N. A. 2003). Research on this symbiotic interaction has the potential to enhance food production and make sustainable changes in the field of agriculture (P, N. A. 2003). This page will discuss the process for nodulation and key genes of this symbiosis.

Initiating Legume-Rhizobia Symbiosis

Section titles are optional.
[1] Include some current research, with at least one image. Call out each figure by number (Fig. 1).

Sample citations: [1] [2]

A citation code consists of a hyperlinked reference within "ref" begin and end codes.

[3]

For multiple use of the same inline citation or footnote, you can use the named references feature, choosing a name to identify the inline citation, and typing [4]

[4]

Second citation of Ref 1: [1]

Here we cite April Murphy's paper on microbiomes of the Kokosing river. [5]

Key Genes in Symbiotic Nitrogen Fixation

Include some current research, with a second image.

Here we cite Murphy's microbiome research again.[5]

CFuture Prospects

You may have a short concluding section. Overall, cite at least 5 references under References section.

References


Edited by Rebecca Holland, student of Joan Slonczewski for BIOL 116, 2024, Kenyon College.