Bay Area Satsuki Aikokai

Satsuki Azalea Bonsai Club

Category: Uncategorized (Page 1 of 2)

Engraved Brick Fundraiser

The Bonsai Garden at Lake Merritt has been raising funds for its Garden Revitalization Project (GRO). This project aims to upgrade the display benches and stands, watering system, pathways, and much more, in order to meet the challenges of caring for and maintaining the historic and legacy bonsai collection in a professional and museum quality manner.
As part of this, they have initiated a recognition brick fundraiser drive in which individuals, clubs and businesses can purchase a variety of state of the art engraved bricks, and the proceeds will go towards the GRO Project. GRO projects include laying cement pavers for all pathways within the Bonsai Garden, and the engraved bricks will line a special pathway.
For information http://www.gsbf-lakemerritt.org/wp-content/uploads/2017/09/Bonsai-Garden-of-Lake-Merritt-Brick-Flyer-09-11-17.pdf

Example: personal engraved brick

Secrets of Bonsai: Uncovering the mechanism of root regeneration

ReIncreased levels of AUX/IAA19, which indicate an activation of auxin signaling, were observed in the cut-end of root-cut plants compared to intact plants. Scale bar = 0.1 mm. Credit: Xu D. et al., Plant and Cell Physiology, September 1, 2017.

The molecular mechanism behind root regeneration after root cutting in plants has been discovered. A finding which could lead to the development of new methods for regulating plant growth in agriculture and horticulture.

A plant’s root system is highly regenerative. It plays a critical role in absorbing water and nutrients from the soil and therefore its loss can be an immediate threat to their lives. The plasticity of the root system also helps plants adopt to adverse conditions such as draught. An agricultural technique called root pruning, or root cutting, uses this natural robustness to control plant growth. It has also been used in horticulture to control plant size and vigor as seen in Bonsai.

Previous studies have suggested that root regeneration occurs through the induction of lateral root (LR) formation, and that auxin, a well-studied growth hormone involved in various processes of plant development, plays a role in the process. However, the molecular mechanism behind root regeneration has remained largely unknown.

According to a new study published in Plant and Cell Physiology, scientists have identified for the first time that YUCCA9, one of the eleven YUCCA genes involved in auxin synthesis, plays a primary role in root-system regeneration.

Using Arabidopsis as a model, the research team led by Associate Professor Masaaki Watahiki of Hokkaido University found that root cutting induces both LR formation and the growth of existing roots. Experiments investigating gene expressions and using mutants identified YUCCA9 as the primary gene responsible for auxin biosynthesis during root-system regeneration after root cutting. In collaboration with Professor Masashi Asahina of Teikyo University, the team also found an evident increase in the level of auxin after cutting.

Auxin commonly shows an uneven distribution in plant bodies as a result of polar transportation, leading to gravity – or light-induced bending of the plant. The team found that the polar transport system is required for root regeneration as well.
Interestingly, the team revealed that the defective LRs of some auxin signaling mutants can be recovered by root cutting, suggesting the robustness of the auxin signaling induced by root cutting. They also showed a redundancy of auxin biosynthesis genes by mutant analysis.

“We identified the primary gene of auxin biosynthesis which is responsible for root regeneration upon root damage. This finding could lead to the development of new methods for suppressing or enhancing root regeneration, and thus controlling plant growth in agriculture and horticulture,” says Masaaki Watahiki

More information: Dongyang Xu et al, YUCCA9-Mediated Auxin Biosynthesis and Polar Auxin Transport Synergistically Regulate Regeneration of Root Systems Following Root Cutting, Plant and Cell Physiology (2017). DOI: 10.1093/pcp/pcx107

Provided by: Hokkaido University

Pruning Satsuki Azalea Bonsai by Master Shigeo Isobe

During the 8th World Bonsai Convention, Saitama City, Japan, this past April 27-30, 2017, Master Bonsai Artist Shigeo Isobe performed a demonstration on a Satsuki Azalea bonsai. He started with an overgrown, bushy, mature Satsuki Azalea bonsai. Master Isobe demonstrated how much pruning a Satsuki Azalea bonsai can be done. The photograph below depicts the completed demonstration Satsuki Azalea bonsai.

Completed demonstration Satsuki Azalea bonsai by Master Shigeo Isobe for the 8th World Bonsai Convention, Saitama City, Japan. Photo by George Haas.

Update: Bonsai Garden at Lake Merritt (BGLM) Garden Revitalization Opportunity (GRO)

Great news – the Bonsai Garden at Lake Merritt (BGLM) Garden Revitalization Opportunity (GRO) Project ended August 2017 by raising 45% towards its goal of $100,000. New vertical, straight grain red cedar benches and stands have been installed to replace the original bonsai display benches and stands. There have been more than two thirds of the new overhead water systems using the new micro cone sprayers installed to replace the old drip irrigation piping. Copper metal sculpture artwork has been added to the accent display site with its own water system. In October, plans call for the installment of cement pavers for all the pathways. This will eliminate muddy and dusty conditions and make it more accessible and safer for the public. Needless to say, exciting things are taking place at the BGLM. Look for new fundraising ideas coming this month. BGLM thanks everyone for their support.

Working with Darren Wong

Photo taken after thinning on July 15, 2017

On 15 July 2017, I took my “Kaho” Satsuki Azalea bonsai to Darren Wong of Soh-Ju-En, a family business specializing in Satsuki Azalea bonsai, to work on and perform summer maintenance. Darren wanted to thin out the pads which were very dense. We did not perform Mesuki, a technique for pruning to shape. The yearly growth should be trimmed; shoots grow in sets of five at the ends of branches and should be trimmed down to two. The rest of the shoots should be pruned to two sets of leaves. Prune secondary shoots in the middle of summer. However, in the case of my “Kaho” Darren chose to thin the leaves slightly. We removed dead leaves and tiny branches, mostly in the interior. The pads were very dense. Darren wanted it so when you put your hand under the pad you can see the hand clearly from above the pad. Some photographs were taken upon completion. Darren will send the photographs to his sensei Sushio Nakayama in Japan to show what progress has been made on the bonsai. Darren and sensei Sushio have selected a show pot for the “Kaho” which should arrive from Japan in time for the repotting season next year. For now the “Kaho” remains in a large training pot. I took some photographs  of the “Kaho” in May of this year. The ability to show the bonsai next year depends on many factors.

Photo taken by George Haas May 2017 showing partial flowering.

 

Up-Date: GSBF Bonsai Garden at Lake Merritt (BGLM) Garden Revitalization Opportunity (GRO)

As of June 30, 2017, GSBF BGLM has raised 37% of its goal for the GRO Project. The goal of $100,000 is slowly and surely becoming a reality. GRO Project is the first major replacement and improvement undertaking by BGLM since it opened its gate to the public in 1999. Already, many of the display benches and stands have been built and installed. These display benches and stands are made of red cedar and constructed in traditional Japanese joinery. More than two thirds of the new water overhead and spot system has been put in place and is currently in operation. The GRO Project calls for cement pavers for all the pathways and new cul-de-sac. Fund raising has a ways to go. Donate now! Help spread the word among family, friends and others. Log on to the GSBF BGLM website http://www. gsbf-lakemerritt.org to contribute online. It takes only minutes to donate any amount of funds. Or mail a check to GSBF Bonsai Garden at Lake Merritt, PO Box 16176, Oakland, CA 94610-6176, made payable to GSBF BGLM and note GRO Project in the memo section.

 

Soh-Ju-En Bonsai

Bay Area Satsuki Aikokai (BASA) club members are a lucky bunch. We have beautiful Satsuki Azalea bonsai to display every year in May. The time that Satsuki Azaleas are in full bloom. But, we also have among our membership experienced teachers and bonsai artists. And on top of that, we have fine quality vendors. I would like to highlight the friendship and resources of Darren and Laura Wong in this post. They together started working on Satsuki Azalea bonsai in the spring of 2001. They completed a three-year course of instruction at El Dorado Bonsai, in Placerville, CA., that taught the Japanese ways of styling, cultivating, and maintaining healthy Satsuki azalea bonsai. In 2005, they were accepted as students by Mr. Sushio Nakayama in Japan. Both travel back to Japan two to three times a year to study with their sensei Nakayama.

Their main goal is to help spread the art and proper care of Satsuki Azalea bonsai here in the United States.

Darren and Laura import fine quality Satsuki Azalea bonsai and bonsai supplies from Japan. Their business name is Soh-Ju-En, meaning “twin trunk or husband/wife. Essentially, it connotates two working as one.”

Please check out their website at http://www.sohjuensatsukibonsai.com.

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