Lotus japonicus HAR1 regulates root morphology locally and systemically under a moderate nitrate condition in the absence of rhizobia

Hayashi-Tsugane, Mika; Kawaguchi, Masayoshi

doi:10.1007/s00425-022-03873-8

Cited by 3 publications

(2 citation statements)

References 63 publications

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“…Therefore, the functions of CLE peptides may be different depending on their destination tissues, although they are perceived by the same receptors. LjHAR1 has been shown to regulate both nodulation and lateral root formation, although only LjHAR1 expressed in the shoots is involved in nodule formation (44)(45)(46). In addition, Medicago truncatula LRR receptor-like kinase COMPACT ROOT ARCHITEC-TURE 2 (MtCRA2) has been shown to locally control lateral root formation but systemically control symbiotic nodule formation (47).…”

Section: Discussionmentioning

confidence: 99%

“…These lines of evidence are consistent with our results that CLV1 can function in long-distance signaling for specific functions, namely, gall formation regulation. On the other hand, a recent study has reported that LjHAR1 controls root development locally and systemically ( 44 ). In addition, Arabidopsis C-TERMINALLY ENCODED PEPTIDE RECEPTOR 1 (CEPR1) inhibits lateral root growth by both short- and long-distance signaling ( 48 , 49 ).…”

Section: Discussionmentioning

confidence: 99%

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Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance signal for successful infection

et al. 2023

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Plants use many long-distance and systemic signals to modulate growth and development, as well as respond to biotic and abiotic stresses. Parasitic nematodes infect host plant roots and cause severe damage to crop plants. However, the molecular mechanisms that regulate parasitic nematode infections are still unknown. Here, we show that plant parasitic root-knot nematodes (RKNs), Meloidogyne incognita , modulate the host CLAVATA3 (CLV3)/EMBRYO SURROUNDING REGION (CLE)–CLV1 signaling module to promote the infection progression. Plants deficient in the CLE signaling pathway show enhanced RKN resistance, whereas CLE overexpression leads to increased susceptibility toward RKN. Grafting analysis shows that CLV1 expression in the shoot alone is sufficient to positively regulate RKN infection. Together with results from the split-root culture system, infection assays, and CLE3-CLV1 binding assays, we conclude that mobile root-derived CLE signals are perceived by CLV1 in the shoot, which subsequently produce systemic signals to promote gall formation and RKN reproduction.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance signal for successful infection

et al. 2023

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Local and systemic targets of the MtCLE35-SUNN pathway in the roots of Medicago truncatula

Lebedeva

Dobychkina

Yashenkova

et al. 2023

Journal of Plant Physiology

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A micro RNA mediates shoot control of root branching

Sexauer,

Bhasin,

Schön

et al. 2023

Nat Commun

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Plants extract mineral nutrients from the soil, or from interactions with mutualistic soil microbes via their root systems. Adapting root architecture to nutrient availability enables efficient resource utilization, particularly in patchy and dynamic environments. Root growth responses to soil nitrogen levels are shoot-mediated, but the identity of shoot-derived mobile signals regulating root growth responses has remained enigmatic. Here we show that a shoot-derived micro RNA, miR2111, systemically steers lateral root initiation and nitrogen responsiveness through its root target TML (TOO MUCH LOVE) in the legume Lotus japonicus, where miR2111 and TML were previously shown to regulate symbiotic infections with nitrogen fixing bacteria. Intriguingly, systemic control of lateral root initiation by miR2111 and TML/HOLT (HOMOLOGUE OF LEGUME TML) was conserved in the nonsymbiotic ruderal Arabidopsis thaliana, which follows a distinct ecological strategy. Thus, the miR2111-TML/HOLT regulon emerges as an essential, conserved factor in adaptive shoot control of root architecture in dicots.

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Lotus japonicus HAR1 regulates root morphology locally and systemically under a moderate nitrate condition in the absence of rhizobia

Cited by 3 publications

References 63 publications

Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance signal for successful infection

Root-knot nematode modulates plant CLE3-CLV1 signaling as a long-distance signal for successful infection

Local and systemic targets of the MtCLE35-SUNN pathway in the roots of Medicago truncatula

A micro RNA mediates shoot control of root branching

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