Hydrogen peroxide homeostasis provides beneficial micro-environment for SHR-mediated periclinal division in Arabidopsis root
© 2020 The Authors New Phytologist © 2020 New Phytologist Trust..
The precise regulation of asymmetric cell division (ACD) is essential for plant organogenesis. In Arabidopsis roots, SHORT-ROOT (SHR) functions to promote periclinal division in cortex/endodermis initials, which generate the ground tissue patterning. Although multiple downstream transcription factors and interplaying hormone pathways have been reported, the cellular mechanism that affects SHR-mediated periclinal division remains largely unclear. Here, we found that SHR can substantially elevate reactive oxygen species (ROS) levels in Arabidopsis roots by activating respiratory burst oxidase homologs (RBOHs). Among the ROS products, hydrogen peroxide (H2 O2 ) rather than superoxide (O2- ) was shown to play a critical role in SHR-mediated periclinal division. Scavenging H2 O2 could markedly impair the ability of SHR to induce periclinal division. We also show that salicylic acid (SA) can promote H2 O2 production by repressing CAT expression, which greatly increased periclinal division in root endodermis. As a result, middle cortex was more frequently formed in the endodermis of snc1, a mutant with accumulated endogenous SA and H2 O2 . In addition to RBOHs, SHR also activated the SA pathway, which might contribute to the elevated H2 O2 level induced by SHR. Thus, our data suggest a mechanism by which SHR creates the optimal micro-environment for periclinal division by maintaining ROS homeostasis in Arabidopsis roots.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:228 |
|---|---|
| Enthalten in: |
The New phytologist - 228(2020), 6 vom: 01. Dez., Seite 1926-1938 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Li, Pengxue [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 14.05.2021 Date Revised 14.05.2021 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1111/nph.16824 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM31282372X |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM31282372X | ||
| 003 | DE-627 | ||
| 005 | 20231225145236.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1111/nph.16824 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1042.xml |
| 035 | |a (DE-627)NLM31282372X | ||
| 035 | |a (NLM)32706394 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Li, Pengxue |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Hydrogen peroxide homeostasis provides beneficial micro-environment for SHR-mediated periclinal division in Arabidopsis root |
| 264 | 1 | |c 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 14.05.2021 | ||
| 500 | |a Date Revised 14.05.2021 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2020 The Authors New Phytologist © 2020 New Phytologist Trust. | ||
| 520 | |a The precise regulation of asymmetric cell division (ACD) is essential for plant organogenesis. In Arabidopsis roots, SHORT-ROOT (SHR) functions to promote periclinal division in cortex/endodermis initials, which generate the ground tissue patterning. Although multiple downstream transcription factors and interplaying hormone pathways have been reported, the cellular mechanism that affects SHR-mediated periclinal division remains largely unclear. Here, we found that SHR can substantially elevate reactive oxygen species (ROS) levels in Arabidopsis roots by activating respiratory burst oxidase homologs (RBOHs). Among the ROS products, hydrogen peroxide (H2 O2 ) rather than superoxide (O2- ) was shown to play a critical role in SHR-mediated periclinal division. Scavenging H2 O2 could markedly impair the ability of SHR to induce periclinal division. We also show that salicylic acid (SA) can promote H2 O2 production by repressing CAT expression, which greatly increased periclinal division in root endodermis. As a result, middle cortex was more frequently formed in the endodermis of snc1, a mutant with accumulated endogenous SA and H2 O2 . In addition to RBOHs, SHR also activated the SA pathway, which might contribute to the elevated H2 O2 level induced by SHR. Thus, our data suggest a mechanism by which SHR creates the optimal micro-environment for periclinal division by maintaining ROS homeostasis in Arabidopsis roots | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Arabidopsis | |
| 650 | 4 | |a SHORT-ROOT (SHR) | |
| 650 | 4 | |a hydrogen peroxide | |
| 650 | 4 | |a micro-environment | |
| 650 | 4 | |a periclinal division | |
| 650 | 4 | |a reactive oxygen species (ROS) | |
| 650 | 4 | |a root | |
| 650 | 7 | |a Arabidopsis Proteins |2 NLM | |
| 650 | 7 | |a SNC1 protein, Arabidopsis |2 NLM | |
| 650 | 7 | |a Hydrogen Peroxide |2 NLM | |
| 650 | 7 | |a BBX060AN9V |2 NLM | |
| 700 | 1 | |a Cai, Qiang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Hong |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Shuang |e verfasserin |4 aut | |
| 700 | 1 | |a Cheng, Jie |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Haiyang |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Qiaozhi |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Shuang |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t The New phytologist |d 1979 |g 228(2020), 6 vom: 01. Dez., Seite 1926-1938 |w (DE-627)NLM09818248X |x 1469-8137 |7 nnns |
| 773 | 1 | 8 | |g volume:228 |g year:2020 |g number:6 |g day:01 |g month:12 |g pages:1926-1938 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1111/nph.16824 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 228 |j 2020 |e 6 |b 01 |c 12 |h 1926-1938 | ||