<i>ZmILI1</i> regulates leaf angle by directly affecting <i>liguleless1</i> expression in maize

Ren, Zhenzhen; Wu, Liancheng; Ku, Lixia; Wang, Huitao; Zeng, Haixia; Su, Huihui; Li, Wei; Dou, Deqiang; Liu, Huafeng; Cao, Yingying; Zhang, Dongling; Han, Shengbo; Chen, Yanhui

doi:10.1111/pbi.13255

Cited by 40 publications

(24 citation statements)

References 10 publications

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“…In wheat, the LG1 ortholog, TaSPL8, directly bound to the promoter of an auxin response factor TaARF6 and the BR biosynthesis gene CYP90D2 (TaD2), and subsequently activated their expressions, leading to enhancing lamina joint development [50]. Recently, ZmILI1, an ortholog of OsILI1 that plays an important role in LA in rice, was found to directly bind to the ZmLG1 and CYP90D1 promoters to affect the BR biosynthesis and signal, eventually changing the LA [51]. Collectively, these studies supported a notion that components of BR signaling pathway play a dominant and conserved role in the formation of leaf angle in multiple crops and would be the potential targets for genetic improvement of crop architecture and yield.…”

Section: Regulation Of Lamina Joint Bending By Brassinosteroid (Br)mentioning

confidence: 99%

Synergistic Interaction of Phytohormones in Determining Leaf Angle in Crops

Lü

et al. 2020

IJMS

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Leaf angle (LA), defined as the angle between the plant stem and leaf adaxial side of the blade, generally shapes the plant architecture into a loosen or dense structure, and thus influences the light interception and competition between neighboring plants in natural settings, ultimately contributing to the crop yield and productivity. It has been elucidated that brassinosteroid (BR) plays a dominant role in determining LA, and other phytohormones also positively or negatively participate in regulating LA. Accumulating evidences have revealed that these phytohormones interact with each other in modulating various biological processes. However, the comprehensive discussion of how the phytohormones and their interaction involved in shaping LA is relatively lack. Here, we intend to summarize the advances in the LA regulation mediated by the phytohormones and their crosstalk in different plant species, mainly in rice and maize, hopefully providing further insights into the genetic manipulation of LA trait in crop breeding and improvement in regarding to overcoming the challenge from the continuous demands for food under limited arable land area.

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Section: Regulation Of Lamina Joint Bending By Brassinosteroid (Br)mentioning

confidence: 99%

Synergistic Interaction of Phytohormones in Determining Leaf Angle in Crops

Lü

et al. 2020

IJMS

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“…Tian et al (2019) mapped 12 QTLs for leaf angle in a population of 866 maize–teosinte BC 2 S 3 recombinant inbred lines derived from a cross between the maize inbred line W22 and the teosinte accession CIMMYT 8759. To date, in the multiple QTLs that have been located, only six genes have been reported as a result of the combined use of quantitative genetics (Ku et al , 2011; Zhang et al ., 2014; Ren et al , 2020; Tian et al ., 2019; Cao et al ., 2020). The first reported candidate gene, ZmTAC1 , on a major QTL for LA that was detected on chromosome 2, was cloned using a comparative genomics method (Ku et al , 2011).…”

Section: Introductionmentioning

confidence: 99%

“…ZmRAVL1 regulates brd1 (brassinosteroid C-6 oxidase1), which underlies UPA1, altering endogenous brassinosteroid content and leaf angle (Tian et al , 2019). ZmILI1 , a candidate gene of qLA2 on chromosome 2, directly binds to the promoters of the downstream gene LG1 and activates LG1 to further increase leaf angle (Ren et al ., 2020). Ren et al .…”

Section: Introductionmentioning

confidence: 99%

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ZmCLA4 regulates leaf angle through multiple plant hormone-mediated signal pathways in maize

Dou

Han

et al. 2020

Preprint

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Leaf angle in cereals is an important agronomic trait contributing to plant architecture and grain yield by determining the plant compactness. Although ZmCLA4 was identified to shape plant architecture by affecting leaf angle, the detailed regulatory mechanism of ZmCLA4 in maize remains unclear. ZmCLA4 was identified as a transcriptional repressor using the Gal4-LexA/UAS system and transactivation analysis in yeast. The DNA affinity purification (DAP)-seq assay showed that ZmCLA4 not only acts as a repressor containing the EAR motif (CACCGGAC), but was also found to have two new motifs, CCGARGS and CDTCNTC. On analyzing the ZmCLA4-bound targeted genes, we found that ZmCLA4, as a cross node of multiple plant hormone-mediated pathways, directly bound to ARF22 and IAA26 to regulate auxin transport and mediated brassinosteroid signaling by directly binding to BZR3 and 14-3-3. ZmCLA4 bound two WRKY genes involved with abscisic acid, two genes (CYP75B1, CYP93D1) involved with jasmonic acid, B3 involved in the response to ethylene, and thereby negatively regulated leaf angle formation. We built a new regulatory network for the ZmCLA4 gene controlling leaf angle in maize, which contributed to the understanding of ZmCLA4’s regulatory mechanism and will improve grain yields by facilitating optimization of plant architecture.

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“…Genetic studies have indicated that leaf angle in maize is a complex trait controlled by both qualitative genes and quantitative genes. According to an incomplete statistic, eleven representative maize genes that control the leaf angle have been cloned, five of which were identified by mutagenesis: knox [7], liguleless1 (lg1) [8], liguleless2 (lg2) [9], liguleless3 (lg3) [10], liguleless narrow (lgn) [11], and six were resolved through QTL-cloning approach: ZmTAC1 [12], ZmCLA4 [13], ZmILI1 [14], and UPA2/UPA1 [15], ZmIBH1-1 [16]. In the past years, a large number of QTL for leaf angle have been obtained by genetic dissection of maize leaf angle using biparental populations [17][18][19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

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ZmILI1 regulates leaf angle by directly affecting liguleless1 expression in maize

Cited by 40 publications

References 10 publications

Synergistic Interaction of Phytohormones in Determining Leaf Angle in Crops

Synergistic Interaction of Phytohormones in Determining Leaf Angle in Crops

ZmCLA4 regulates leaf angle through multiple plant hormone-mediated signal pathways in maize

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