The cross‐kingdom roles of mineral nutrient transporters in plant‐microbe relations

Abstract

The regulation of plant physiology by plant mineral nutrient transporter (MNT) is well understood. Recently, the extensive characterization of beneficial and pathogenic plant‐microbe interactions has defined the roles for MNTs in such relationships. In this review, we summarize the roles of diverse nutrient transporters in the symbiotic or pathogenic relationships between plants and microorganisms. In doing so, we highlight how MNTs of plants and microbes can act in a coordinated manner. In symbiotic relationships, MNTs play key roles in the establishment of the interaction between the host plant and rhizobium or mycorrhizae as well in the subsequent coordinated transport of nutrients. Additionally, MNTs may also regulate the colonization or degeneration of symbiotic microorganisms by reflecting the nutrient status of the plant and soil. This allows the host plant obtain nutrients from the soil in the most optimal manner. With pathogenic‐interactions, MNTs influence pathogen proliferation, the efficacy of the host's biochemical defense and related signal transduction mechanisms. We classify the MNT effects in plant‐pathogen interactions as either indirect by influencing the nutrient status and fitness of the pathogen, or direct by initiating host defense mechanisms. While such observations indicate the fundamental importance of MNTs in governing the interactions with a range of microorganisms, further work is needed to develop an integrative understanding of their functions.

Indigenous Microorganisms Offset Arbuscular Mycorrhizal Fungi-Induced Plant Growth and Nutrient Acquisition Through Negatively Modulating the Genes of Phosphorus Transport and Nitrogen Assimilation

“… Ohkama-Ohtsu and Wasaki (2010) indicated that the symbiosis between plants and AM fungi might involve the same signaling pathway of the symbiosis between plants and rhizobia. Pathogens can regulate mineral nutrient transporter, which is also regulated by AM fungi, thereby influencing pathogen proliferation, biochemical defense of host, and related signal transduction mechanisms ( Sun et al, 2021 ). Therefore, indigenous microorganisms in the soil are recognized as the third party involved in AM fungi regulation for the host plant, not just soil-borne “free riders” ( Jansa et al, 2013 ); the cooperation and competition between AM fungi and indigenous microorganisms are inevitable in natural soil.…”

The Roles of Phosphorus and Nitrogen Nutrient Transporters in the Arbuscular Mycorrhizal Symbiosis

“…This response to low N seems to involve AMT2;3, and the simultaneous mutation of this AMT and PT restores the inhibition of AM fungi colonization. This indicates that AMT-mediated N transfer to the symbiotic interface also serves as a signal to regulate mycorrhizal colonization, in some cases going beyond the function of PT [ 141 , 161 , 162 ].…”

Prokaryotic communities adapted to microhabitats on the Indian lotus (Nelumbo nucifera) growing in the high-altitude urban Dal Lake

“…The genes encoding function such as nutrient and mineral acquisition were more abundant for the communities on the lotus microhabitats. The role of microorganisms in maintaining the ow of nutrients to the host plant is crucial for overall plant growth and productivity, as the direct uptake of nutrients by plants via roots can lead to a nutrient depletion zone (Sun et al 2021).…”